636706424607 has 48 divisors (see below), whose sum is σ = 988130330880. Its totient is φ = 363383349120.

The previous prime is 636706424597. The next prime is 636706424609. The reversal of 636706424607 is 706424607636.

636706424607 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 not a de Polignac number, because 636706424607 - 2³⁵ = 602346686239 is a prime.

It is a super-2 number, since 2×636706424607² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 636706424607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636706424609) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 875403 + ... + 1428195.

It is an arithmetic number, because the mean of its divisors is an integer number (20586048560).

Almost surely, 2^636706424607 is an apocalyptic number.

636706424607 is a deficient number, since it is larger than the sum of its proper divisors (351423906273).

636706424607 is a wasteful number, since it uses less digits than its factorization.

636706424607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553004 (or 552993 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 51.

The spelling of 636706424607 in words is "six hundred thirty-six billion, seven hundred six million, four hundred twenty-four thousand, six hundred seven".