636427275 has 24 divisors (see below), whose sum is σ = 1147884864. Its totient is φ = 308570400.

The previous prime is 636427247. The next prime is 636427291. The reversal of 636427275 is 572724636.

It is not a de Polignac number, because 636427275 - 2⁸ = 636427019 is a prime.

It is a super-3 number, since 3×636427275³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384889 + ... + 386538.

It is an arithmetic number, because the mean of its divisors is an integer number (47828536).

Almost surely, 2^636427275 is an apocalyptic number.

636427275 is a deficient number, since it is larger than the sum of its proper divisors (511457589).

636427275 is a wasteful number, since it uses less digits than its factorization.

636427275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771451 (or 771446 counting only the distinct ones).

The product of its digits is 423360, while the sum is 42.

The square root of 636427275 is about 25227.5102814368. The cubic root of 636427275 is about 860.1672988931.

The spelling of 636427275 in words is "six hundred thirty-six million, four hundred twenty-seven thousand, two hundred seventy-five".