77818914 has 32 divisors (see below), whose sum is σ = 173471040. Its totient is φ = 25858656.

The previous prime is 77818883. The next prime is 77818921. The reversal of 77818914 is 41981877.

It is a super-2 number, since 2×77818914² = 12111566752278792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77818914.

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 in 15 ways as a sum of consecutive naturals, for example, 16662 + ... + 20814.

It is an arithmetic number, because the mean of its divisors is an integer number (5420970).

Almost surely, 2^77818914 is an apocalyptic number.

77818914 is an abundant number, since it is smaller than the sum of its proper divisors (95652126).

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

77818914 is a wasteful number, since it uses less digits than its factorization.

77818914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4511 (or 4505 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 77818914 is about 8821.5029331741. The cubic root of 77818914 is about 426.9349629550.

The spelling of 77818914 in words is "seventy-seven million, eight hundred eighteen thousand, nine hundred fourteen".