2949681 has 32 divisors (see below), whose sum is σ = 4866048. Its totient is φ = 1552320.

The previous prime is 2949679. The next prime is 2949701. The reversal of 2949681 is 1869492.

It is not a de Polignac number, because 2949681 - 2¹ = 2949679 is a prime.

It is a super-2 number, since 2×2949681² = 17401236003522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2949281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14875 + ... + 15071.

It is an arithmetic number, because the mean of its divisors is an integer number (152064).

2^2949681 is an apocalyptic number.

2949681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2949681 is a deficient number, since it is larger than the sum of its proper divisors (1916367).

2949681 is a wasteful number, since it uses less digits than its factorization.

2949681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261.

The product of its digits is 31104, while the sum is 39.

The square root of 2949681 is about 1717.4635367308. The cubic root of 2949681 is about 143.4140444414.

The spelling of 2949681 in words is "two million, nine hundred forty-nine thousand, six hundred eighty-one".