2975681 has 4 divisors (see below), whose sum is σ = 3017664. Its totient is φ = 2933700.

The previous prime is 2975677. The next prime is 2975683. The reversal of 2975681 is 1865792.

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.

It is a cyclic number.

It is not a de Polignac number, because 2975681 - 2² = 2975677 is a prime.

It is a super-2 number, since 2×2975681² = 17709354827522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2975683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20885 + ... + 21026.

It is an arithmetic number, because the mean of its divisors is an integer number (754416).

2^2975681 is an apocalyptic number.

It is an amenable number.

2975681 is a deficient number, since it is larger than the sum of its proper divisors (41983).

2975681 is an equidigital number, since it uses as much as digits as its factorization.

2975681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41982.

The product of its digits is 30240, while the sum is 38.

The square root of 2975681 is about 1725.0162318077. The cubic root of 2975681 is about 143.8341873589.

The spelling of 2975681 in words is "two million, nine hundred seventy-five thousand, six hundred eighty-one".