636670336734 has 48 divisors (see below), whose sum is σ = 1432854958080. Its totient is φ = 211880496600.

The previous prime is 636670336733. The next prime is 636670336751. The reversal of 636670336734 is 437633076636.

636670336734 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636670336733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 757342 + ... + 1359009.

It is an arithmetic number, because the mean of its divisors is an integer number (29851144960).

Almost surely, 2^636670336734 is an apocalyptic number.

636670336734 is an abundant number, since it is smaller than the sum of its proper divisors (796184621346).

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

636670336734 is a wasteful number, since it uses less digits than its factorization.

636670336734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116987 (or 2116975 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 54.

The spelling of 636670336734 in words is "six hundred thirty-six billion, six hundred seventy million, three hundred thirty-six thousand, seven hundred thirty-four".