77934688 has 36 divisors (see below), whose sum is σ = 166155948. Its totient is φ = 35967360.

The previous prime is 77934653. The next prime is 77934707. The reversal of 77934688 is 88643977.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1798 + ... + 12613.

It is an arithmetic number, because the mean of its divisors is an integer number (4615443).

Almost surely, 2^77934688 is an apocalyptic number.

It is an amenable number.

77934688 is an abundant number, since it is smaller than the sum of its proper divisors (88221260).

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

77934688 is a wasteful number, since it uses less digits than its factorization.

77934688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14447 (or 14426 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 52.

The square root of 77934688 is about 8828.0625280975. The cubic root of 77934688 is about 427.1465802178.

The spelling of 77934688 in words is "seventy-seven million, nine hundred thirty-four thousand, six hundred eighty-eight".