78170863 has 8 divisors (see below), whose sum is σ = 81355680. Its totient is φ = 75018720.

The previous prime is 78170849. The next prime is 78170867. The reversal of 78170863 is 36807187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78170863 - 2²⁵ = 44616431 is a prime.

It is a super-2 number, since 2×78170863² = 12221367644329538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78170867) 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, 3228 + ... + 12913.

It is an arithmetic number, because the mean of its divisors is an integer number (10169460).

Almost surely, 2^78170863 is an apocalyptic number.

78170863 is a deficient number, since it is larger than the sum of its proper divisors (3184817).

78170863 is a wasteful number, since it uses less digits than its factorization.

78170863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16337.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 78170863 is about 8841.4287872493. The cubic root of 78170863 is about 427.5776232404.

The spelling of 78170863 in words is "seventy-eight million, one hundred seventy thousand, eight hundred sixty-three".