634201200620 has 24 divisors (see below), whose sum is σ = 1434270408144. Its totient is φ = 234166597056.

The previous prime is 634201200613. The next prime is 634201200623. The reversal of 634201200620 is 26002102436.

It is a super-2 number, since 2×634201200620² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 634201200620.

It is not an unprimeable number, because it can be changed into a prime (634201200623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219617434 + ... + 1219617953.

It is an arithmetic number, because the mean of its divisors is an integer number (59761267006).

Almost surely, 2^634201200620 is an apocalyptic number.

It is an amenable number.

634201200620 is an abundant number, since it is smaller than the sum of its proper divisors (800069207524).

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

634201200620 is a wasteful number, since it uses less digits than its factorization.

634201200620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2439235409 (or 2439235407 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The spelling of 634201200620 in words is "six hundred thirty-four billion, two hundred one million, two hundred thousand, six hundred twenty".