76949657 has 4 divisors (see below), whose sum is σ = 79431936. Its totient is φ = 74467380.

The previous prime is 76949647. The next prime is 76949671. The reversal of 76949657 is 75694967.

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 76949657 - 2⁸ = 76949401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76949599 and 76949608.

It is not an unprimeable number, because it can be changed into a prime (76949617) 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, 1241093 + ... + 1241154.

It is an arithmetic number, because the mean of its divisors is an integer number (19857984).

Almost surely, 2^76949657 is an apocalyptic number.

It is an amenable number.

76949657 is a deficient number, since it is larger than the sum of its proper divisors (2482279).

76949657 is a wasteful number, since it uses less digits than its factorization.

76949657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482278.

The product of its digits is 2857680, while the sum is 53.

The square root of 76949657 is about 8772.0953597188. The cubic root of 76949657 is about 425.3393497286.

The spelling of 76949657 in words is "seventy-six million, nine hundred forty-nine thousand, six hundred fifty-seven".