636616074 has 8 divisors (see below), whose sum is σ = 1273232160. Its totient is φ = 212205356.

The previous prime is 636616073. The next prime is 636616087. The reversal of 636616074 is 470616636.

It is a happy number.

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

636616074 is an admirable number.

It is a super-3 number, since 3×636616074³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (636616073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53051334 + ... + 53051345.

It is an arithmetic number, because the mean of its divisors is an integer number (159154020).

Almost surely, 2^636616074 is an apocalyptic number.

636616074 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

636616074 is a wasteful number, since it uses less digits than its factorization.

636616074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106102684.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 636616074 is about 25231.2519308892. The cubic root of 636616074 is about 860.2523479768.

The spelling of 636616074 in words is "six hundred thirty-six million, six hundred sixteen thousand, seventy-four".