636898 has 16 divisors (see below), whose sum is σ = 1008000. Its totient is φ = 301392.

The previous prime is 636877. The next prime is 636917. The reversal of 636898 is 898636.

It is a self number, because there is not a number n which added to its sum of digits gives 636898.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4513 + ... + 4651.

It is an arithmetic number, because the mean of its divisors is an integer number (63000).

2⁶³⁶⁸⁹⁸ is an apocalyptic number.

636898 is a deficient number, since it is larger than the sum of its proper divisors (371102).

636898 is a wasteful number, since it uses less digits than its factorization.

636898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249.

The product of its digits is 62208, while the sum is 40.

The square root of 636898 is about 798.0588950698. The cubic root of 636898 is about 86.0379317077.

The spelling of 636898 in words is "six hundred thirty-six thousand, eight hundred ninety-eight".