77920876 has 24 divisors (see below), whose sum is σ = 150299856. Its totient is φ = 35051520.

The previous prime is 77920873. The next prime is 77920897. The reversal of 77920876 is 67802977.

It is not an unprimeable number, because it can be changed into a prime (77920873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4861 + ... + 13396.

It is an arithmetic number, because the mean of its divisors is an integer number (6262494).

Almost surely, 2^77920876 is an apocalyptic number.

It is an amenable number.

77920876 is a deficient number, since it is larger than the sum of its proper divisors (72378980).

77920876 is a wasteful number, since it uses less digits than its factorization.

77920876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18369 (or 18367 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 77920876 is about 8827.2802153325. The cubic root of 77920876 is about 427.1213449972.

The spelling of 77920876 in words is "seventy-seven million, nine hundred twenty thousand, eight hundred seventy-six".