77810864 has 10 divisors (see below), whose sum is σ = 150758580. Its totient is φ = 38905424.

The previous prime is 77810851. The next prime is 77810879. The reversal of 77810864 is 46801877.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2431574 + ... + 2431605.

It is an arithmetic number, because the mean of its divisors is an integer number (15075858).

Almost surely, 2^77810864 is an apocalyptic number.

It is an amenable number.

77810864 is a deficient number, since it is larger than the sum of its proper divisors (72947716).

77810864 is a wasteful number, since it uses less digits than its factorization.

77810864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863187 (or 4863181 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 77810864 is about 8821.0466499163. The cubic root of 77810864 is about 426.9202409773.

The spelling of 77810864 in words is "seventy-seven million, eight hundred ten thousand, eight hundred sixty-four".