78610506 has 16 divisors (see below), whose sum is σ = 169315104. Its totient is φ = 24187824.

The previous prime is 78610487. The next prime is 78610523. The reversal of 78610506 is 60501687.

It is a super-2 number, since 2×78610506² = 12359223307152072, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503836 + ... + 503991.

It is an arithmetic number, because the mean of its divisors is an integer number (10582194).

Almost surely, 2^78610506 is an apocalyptic number.

78610506 is an abundant number, since it is smaller than the sum of its proper divisors (90704598).

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

78610506 is a wasteful number, since it uses less digits than its factorization.

78610506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007845.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 78610506 is about 8866.2565945274. The cubic root of 78610506 is about 428.3777090528.

The spelling of 78610506 in words is "seventy-eight million, six hundred ten thousand, five hundred six".