78104766 has 32 divisors (see below), whose sum is σ = 168123168. Its totient is φ = 24099840.

The previous prime is 78104753. The next prime is 78104773. The reversal of 78104766 is 66740187.

78104766 = 5² + 6² + ... + 616².

It is a super-2 number, since 2×78104766² = 12200708943829512, 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 in 15 ways as a sum of consecutive naturals, for example, 55 + ... + 12498.

It is an arithmetic number, because the mean of its divisors is an integer number (5253849).

Almost surely, 2^78104766 is an apocalyptic number.

78104766 is an abundant number, since it is smaller than the sum of its proper divisors (90018402).

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

78104766 is a wasteful number, since it uses less digits than its factorization.

78104766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12636.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 78104766 is about 8837.6900828214. The cubic root of 78104766 is about 427.4570771857.

The spelling of 78104766 in words is "seventy-eight million, one hundred four thousand, seven hundred sixty-six".