77676969 has 8 divisors (see below), whose sum is σ = 103645152. Its totient is φ = 51746720.

The previous prime is 77676943. The next prime is 77676983. The reversal of 77676969 is 96967677.

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 77676969 - 2¹² = 77672873 is a prime.

It is a super-2 number, since 2×77676969² = 12067423026053922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77671969) 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, 4299 + ... + 13184.

It is an arithmetic number, because the mean of its divisors is an integer number (12955644).

Almost surely, 2^77676969 is an apocalyptic number.

It is an amenable number.

77676969 is a deficient number, since it is larger than the sum of its proper divisors (25968183).

77676969 is a wasteful number, since it uses less digits than its factorization.

77676969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18967.

The product of its digits is 6001128, while the sum is 57.

The square root of 77676969 is about 8813.4538632706. The cubic root of 77676969 is about 426.6752224711.

The spelling of 77676969 in words is "seventy-seven million, six hundred seventy-six thousand, nine hundred sixty-nine".