78160868 has 24 divisors (see below), whose sum is σ = 139197240. Its totient is φ = 38396160.

The previous prime is 78160861. The next prime is 78160891. The reversal of 78160868 is 86806187.

It can be written as a sum of positive squares in 4 ways, for example, as 12096484 + 66064384 = 3478^2 + 8128^2 .

It is a super-2 number, since 2×78160868² = 12218242573026848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78160861) 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, 63830 + ... + 65042.

It is an arithmetic number, because the mean of its divisors is an integer number (5799885).

Almost surely, 2^78160868 is an apocalyptic number.

It is an amenable number.

78160868 is a deficient number, since it is larger than the sum of its proper divisors (61036372).

78160868 is a wasteful number, since it uses less digits than its factorization.

78160868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487 (or 1485 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 78160868 is about 8840.8635324837. The cubic root of 78160868 is about 427.5593989714.

The spelling of 78160868 in words is "seventy-eight million, one hundred sixty thousand, eight hundred sixty-eight".