76649867 has 8 divisors (see below), whose sum is σ = 89388000. Its totient is φ = 65699592.

The previous prime is 76649863. The next prime is 76649879. The reversal of 76649867 is 76894667.

It is a happy number.

It is not a de Polignac number, because 76649867 - 2² = 76649863 is a prime.

It is a super-2 number, since 2×76649867² = 11750404222235378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76649861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111392 + ... + 112077.

It is an arithmetic number, because the mean of its divisors is an integer number (11173500).

Almost surely, 2^76649867 is an apocalyptic number.

76649867 is a deficient number, since it is larger than the sum of its proper divisors (12738133).

76649867 is an equidigital number, since it uses as much as digits as its factorization.

76649867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223490 (or 223476 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 53.

The square root of 76649867 is about 8754.9909765802. The cubic root of 76649867 is about 424.7862676186.

The spelling of 76649867 in words is "seventy-six million, six hundred forty-nine thousand, eight hundred sixty-seven".