2992681 has 4 divisors (see below), whose sum is σ = 2996352. Its totient is φ = 2989012.

The previous prime is 2992679. The next prime is 2992687. The reversal of 2992681 is 1862992.

2992681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2992681 is a nontrivial binomial coefficient, being equal to C(2447, 2).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2992681 - 2¹ = 2992679 is a prime.

It is a super-2 number, since 2×2992681² = 17912279135522, which contains 22 as substring.

It is a Duffinian number.

2992681 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2992681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2992687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 2446.

It is an arithmetic number, because the mean of its divisors is an integer number (749088).

2^2992681 is an apocalyptic number.

2992681 is the 2446-th triangular number.

2992681 is the 816-th centered nonagonal number.

It is an amenable number.

2992681 is a deficient number, since it is larger than the sum of its proper divisors (3671).

2992681 is a wasteful number, since it uses less digits than its factorization.

2992681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670.

The product of its digits is 15552, while the sum is 37.

The square root of 2992681 is about 1729.9367040444. The cubic root of 2992681 is about 144.1075745809.

The spelling of 2992681 in words is "two million, nine hundred ninety-two thousand, six hundred eighty-one".