76801985 has 12 divisors (see below), whose sum is σ = 99343188. Its totient is φ = 56663136.

The previous prime is 76801969. The next prime is 76801993. The reversal of 76801985 is 58910867.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18905104 + 57896881 = 4348^2 + 7609^2 .

It is not a de Polignac number, because 76801985 - 2⁴ = 76801969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70112 + ... + 71198.

It is an arithmetic number, because the mean of its divisors is an integer number (8278599).

Almost surely, 2^76801985 is an apocalyptic number.

It is an amenable number.

76801985 is a deficient number, since it is larger than the sum of its proper divisors (22541203).

76801985 is an equidigital number, since it uses as much as digits as its factorization.

76801985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 76801985 is about 8763.6741724005. The cubic root of 76801985 is about 425.0670897548.

The spelling of 76801985 in words is "seventy-six million, eight hundred one thousand, nine hundred eighty-five".