637125216 has 96 divisors (see below), whose sum is σ = 2058432768. Its totient is φ = 168030720.

The previous prime is 637125211. The next prime is 637125217. The reversal of 637125216 is 612521736.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (637125211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27730 + ... + 45201.

It is an arithmetic number, because the mean of its divisors is an integer number (21442008).

Almost surely, 2^637125216 is an apocalyptic number.

It is an amenable number.

637125216 is an abundant number, since it is smaller than the sum of its proper divisors (1421307552).

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

637125216 is a wasteful number, since it uses less digits than its factorization.

637125216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72964 (or 72956 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 637125216 is about 25241.3394256327. The cubic root of 637125216 is about 860.4816195413.

The spelling of 637125216 in words is "six hundred thirty-seven million, one hundred twenty-five thousand, two hundred sixteen".