637982 has 16 divisors (see below), whose sum is σ = 1023360. Its totient is φ = 297432.

The previous prime is 637939. The next prime is 638023. The reversal of 637982 is 289736.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3833 + ... + 3995.

It is an arithmetic number, because the mean of its divisors is an integer number (63960).

2⁶³⁷⁹⁸² is an apocalyptic number.

637982 is a deficient number, since it is larger than the sum of its proper divisors (385378).

637982 is a wasteful number, since it uses less digits than its factorization.

637982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287.

The product of its digits is 18144, while the sum is 35.

The square root of 637982 is about 798.7377542097. The cubic root of 637982 is about 86.0867162099.

The spelling of 637982 in words is "six hundred thirty-seven thousand, nine hundred eighty-two".