77690464 has 24 divisors (see below), whose sum is σ = 157889088. Its totient is φ = 37591680.

The previous prime is 77690461. The next prime is 77690471. The reversal of 77690464 is 46409677.

It is a self number, because there is not a number n which added to its sum of digits gives 77690464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77690461) 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, 38167 + ... + 40150.

It is an arithmetic number, because the mean of its divisors is an integer number (6578712).

Almost surely, 2^77690464 is an apocalyptic number.

It is an amenable number.

77690464 is an abundant number, since it is smaller than the sum of its proper divisors (80198624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77690464 is a wasteful number, since it uses less digits than its factorization.

77690464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78358 (or 78350 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 77690464 is about 8814.2194209130. The cubic root of 77690464 is about 426.6999301324.

The spelling of 77690464 in words is "seventy-seven million, six hundred ninety thousand, four hundred sixty-four".