77464512 has 168 divisors, whose sum is σ = 244638576. Its totient is φ = 24219648.

The previous prime is 77464511. The next prime is 77464523. The reversal of 77464512 is 21546477.

77464512 is a `hidden beast` number, since 7 + 7 + 4 + 645 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77464511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264238 + ... + 264530.

It is an arithmetic number, because the mean of its divisors is an integer number (1456182).

Almost surely, 2^77464512 is an apocalyptic number.

77464512 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77464512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122319288).

77464512 is an abundant number, since it is smaller than the sum of its proper divisors (167174064).

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

77464512 is a wasteful number, since it uses less digits than its factorization.

77464512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 315 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 77464512 is about 8801.3926170805. The cubic root of 77464512 is about 426.2858624866.

The spelling of 77464512 in words is "seventy-seven million, four hundred sixty-four thousand, five hundred twelve".