637952 has 44 divisors (see below), whose sum is σ = 1473840. Its totient is φ = 270336.

The previous prime is 637939. The next prime is 638023. The reversal of 637952 is 259736.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7124 + ... + 7212.

2⁶³⁷⁹⁵² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 637952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (736920).

637952 is an abundant number, since it is smaller than the sum of its proper divisors (835888).

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

637952 is an equidigital number, since it uses as much as digits as its factorization.

637952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 98 counting only the distinct ones).

The product of its digits is 11340, while the sum is 32.

The square root of 637952 is about 798.7189743583. The cubic root of 637952 is about 86.0853668291.

The spelling of 637952 in words is "six hundred thirty-seven thousand, nine hundred fifty-two".