636974 has 8 divisors (see below), whose sum is σ = 1029000. Its totient is φ = 293976.

The previous prime is 636967. The next prime is 636983. The reversal of 636974 is 479636.

636974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 636974.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12224 + ... + 12275.

It is an arithmetic number, because the mean of its divisors is an integer number (128625).

2⁶³⁶⁹⁷⁴ is an apocalyptic number.

636974 is a deficient number, since it is larger than the sum of its proper divisors (392026).

636974 is a wasteful number, since it uses less digits than its factorization.

636974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24514.

The product of its digits is 27216, while the sum is 35.

The square root of 636974 is about 798.1065091828. The cubic root of 636974 is about 86.0413538270.

The spelling of 636974 in words is "six hundred thirty-six thousand, nine hundred seventy-four".