78645360 has 40 divisors (see below), whose sum is σ = 243801360. Its totient is φ = 20972032.

The previous prime is 78645331. The next prime is 78645373. The reversal of 78645360 is 6354687.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163605 + ... + 164084.

It is an arithmetic number, because the mean of its divisors is an integer number (6095034).

Almost surely, 2^78645360 is an apocalyptic number.

It is an amenable number.

78645360 is an abundant number, since it is smaller than the sum of its proper divisors (165156000).

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

78645360 is a wasteful number, since it uses less digits than its factorization.

78645360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327705 (or 327699 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 78645360 is about 8868.2219187388. The cubic root of 78645360 is about 428.4410104754.

The spelling of 78645360 in words is "seventy-eight million, six hundred forty-five thousand, three hundred sixty".