2930681 has 16 divisors (see below), whose sum is σ = 3402000. Its totient is φ = 2500608.

The previous prime is 2930657. The next prime is 2930689. The reversal of 2930681 is 1860392.

It can be written as a sum of positive squares in 8 ways, for example, as 512656 + 2418025 = 716^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 2930681 - 2¹⁰ = 2929657 is a prime.

It is a super-2 number, since 2×2930681² = 17177782247522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2930689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19595 + ... + 19743.

It is an arithmetic number, because the mean of its divisors is an integer number (212625).

2^2930681 is an apocalyptic number.

It is an amenable number.

2930681 is a deficient number, since it is larger than the sum of its proper divisors (471319).

2930681 is a wasteful number, since it uses less digits than its factorization.

2930681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2930681 is about 1711.9231875292. The cubic root of 2930681 is about 143.1054530490.

The spelling of 2930681 in words is "two million, nine hundred thirty thousand, six hundred eighty-one".