636739084 has 12 divisors (see below), whose sum is σ = 1162741104. Its totient is φ = 304527344.

The previous prime is 636739027. The next prime is 636739121. The reversal of 636739084 is 480937636.

It is a super-2 number, since 2×636739084² = 810873322186318112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3460447 + ... + 3460630.

It is an arithmetic number, because the mean of its divisors is an integer number (96895092).

Almost surely, 2^636739084 is an apocalyptic number.

It is an amenable number.

636739084 is a deficient number, since it is larger than the sum of its proper divisors (526002020).

636739084 is a wasteful number, since it uses less digits than its factorization.

636739084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6921104 (or 6921102 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 636739084 is about 25233.6894646819. The cubic root of 636739084 is about 860.3077517650.

It can be divided in two parts, 6367 and 39084, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 636739084 in words is "six hundred thirty-six million, seven hundred thirty-nine thousand, eighty-four".