78760644 has 24 divisors (see below), whose sum is σ = 186519648. Its totient is φ = 25861440.

The previous prime is 78760637. The next prime is 78760727. The reversal of 78760644 is 44606787.

It is a junction number, because it is equal to n+sod(n) for n = 78760596 and 78760605.

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, 48177 + ... + 49784.

It is an arithmetic number, because the mean of its divisors is an integer number (7771652).

Almost surely, 2^78760644 is an apocalyptic number.

It is an amenable number.

78760644 is an abundant number, since it is smaller than the sum of its proper divisors (107759004).

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

78760644 is a wasteful number, since it uses less digits than its factorization.

78760644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98035 (or 98033 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 78760644 is about 8874.7193758451. The cubic root of 78760644 is about 428.6502547706.

The spelling of 78760644 in words is "seventy-eight million, seven hundred sixty thousand, six hundred forty-four".