636602 has 4 divisors (see below), whose sum is σ = 954906. Its totient is φ = 318300.

The previous prime is 636569. The next prime is 636613. The reversal of 636602 is 206636.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 461041 + 175561 = 679^2 + 419^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159149 + ... + 159152.

2⁶³⁶⁶⁰² is an apocalyptic number.

636602 is a deficient number, since it is larger than the sum of its proper divisors (318304).

636602 is a wasteful number, since it uses less digits than its factorization.

636602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318303.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 636602 is about 797.8734235454. The cubic root of 636602 is about 86.0246008583.

The spelling of 636602 in words is "six hundred thirty-six thousand, six hundred two".