2913681 has 8 divisors (see below), whose sum is σ = 4113504. Its totient is φ = 1828160.

The previous prime is 2913641. The next prime is 2913697. The reversal of 2913681 is 1863192.

2913681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2913681 - 2⁷ = 2913553 is a prime.

It is a super-2 number, since 2×2913681² = 16979073939522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2913641) 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 7 ways as a sum of consecutive naturals, for example, 28515 + ... + 28616.

It is an arithmetic number, because the mean of its divisors is an integer number (514188).

2^2913681 is an apocalyptic number.

It is an amenable number.

2913681 is a deficient number, since it is larger than the sum of its proper divisors (1199823).

2913681 is a wasteful number, since it uses less digits than its factorization.

2913681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57151.

The product of its digits is 2592, while the sum is 30.

The square root of 2913681 is about 1706.9507901518. The cubic root of 2913681 is about 142.8282123797.

The spelling of 2913681 in words is "two million, nine hundred thirteen thousand, six hundred eighty-one".