78770680 has 32 divisors (see below), whose sum is σ = 177487200. Its totient is φ = 31463296.

The previous prime is 78770677. The next prime is 78770687. The reversal of 78770680 is 8607787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78770687) 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, 52014 + ... + 53506.

It is an arithmetic number, because the mean of its divisors is an integer number (5546475).

Almost surely, 2^78770680 is an apocalyptic number.

It is an amenable number.

78770680 is an abundant number, since it is smaller than the sum of its proper divisors (98716520).

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

78770680 is a wasteful number, since it uses less digits than its factorization.

78770680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 43.

The square root of 78770680 is about 8875.2847841633. The cubic root of 78770680 is about 428.6684607807.

The spelling of 78770680 in words is "seventy-eight million, seven hundred seventy thousand, six hundred eighty".