77954860 has 36 divisors (see below), whose sum is σ = 173914272. Its totient is φ = 29345536.

The previous prime is 77954857. The next prime is 77954861. The reversal of 77954860 is 6845977.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 77954860.

It is not an unprimeable number, because it can be changed into a prime (77954861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 964 + ... + 12523.

It is an arithmetic number, because the mean of its divisors is an integer number (4830952).

Almost surely, 2^77954860 is an apocalyptic number.

It is an amenable number.

77954860 is an abundant number, since it is smaller than the sum of its proper divisors (95959412).

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

77954860 is a wasteful number, since it uses less digits than its factorization.

77954860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13530 (or 13511 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 77954860 is about 8829.2049472192. The cubic root of 77954860 is about 427.1834301227.

The spelling of 77954860 in words is "seventy-seven million, nine hundred fifty-four thousand, eight hundred sixty".