636795 has 32 divisors (see below), whose sum is σ = 1166400. Its totient is φ = 329472.

The previous prime is 636781. The next prime is 636809. The reversal of 636795 is 597636.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (636781) and next prime (636809).

It is not a de Polignac number, because 636795 - 2⁵ = 636763 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7111 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (36450).

2⁶³⁶⁷⁹⁵ is an apocalyptic number.

636795 is a deficient number, since it is larger than the sum of its proper divisors (529605).

636795 is a wasteful number, since it uses less digits than its factorization.

636795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 150 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 636795 is about 797.9943608823. The cubic root of 636795 is about 86.0332934011.

It can be divided in two parts, 636 and 795, that added together give a triangular number (1431 = T₅₃).

The spelling of 636795 in words is "six hundred thirty-six thousand, seven hundred ninety-five".