78108656 has 10 divisors (see below), whose sum is σ = 151335552. Its totient is φ = 39054320.

The previous prime is 78108647. The next prime is 78108671. The reversal of 78108656 is 65680187.

It is a super-2 number, since 2×78108656² = 12201924284252672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2440880 + ... + 2440911.

Almost surely, 2^78108656 is an apocalyptic number.

It is an amenable number.

78108656 is a deficient number, since it is larger than the sum of its proper divisors (73226896).

78108656 is a wasteful number, since it uses less digits than its factorization.

78108656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4881799 (or 4881793 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 78108656 is about 8837.9101602132. The cubic root of 78108656 is about 427.4641735534.

The spelling of 78108656 in words is "seventy-eight million, one hundred eight thousand, six hundred fifty-six".