78646960 has 60 divisors (see below), whose sum is σ = 212718528. Its totient is φ = 26963328.

The previous prime is 78646951. The next prime is 78646961. The reversal of 78646960 is 6964687.

It is a self number, because there is not a number n which added to its sum of digits gives 78646960.

It is not an unprimeable number, because it can be changed into a prime (78646961) 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, 6112 + ... + 13951.

Almost surely, 2^78646960 is an apocalyptic number.

78646960 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78646960 is an abundant number, since it is smaller than the sum of its proper divisors (134071568).

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

78646960 is a wasteful number, since it uses less digits than its factorization.

78646960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20090 (or 20077 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 78646960 is about 8868.3121280208. The cubic root of 78646960 is about 428.4439159274.

The spelling of 78646960 in words is "seventy-eight million, six hundred forty-six thousand, nine hundred sixty".