636734 has 8 divisors (see below), whose sum is σ = 1091568. Its totient is φ = 272880.

The previous prime is 636731. The next prime is 636739. The reversal of 636734 is 437636.

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

It is a junction number, because it is equal to n+sod(n) for n = 636697 and 636706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22727 + ... + 22754.

It is an arithmetic number, because the mean of its divisors is an integer number (136446).

2⁶³⁶⁷³⁴ is an apocalyptic number.

636734 is a deficient number, since it is larger than the sum of its proper divisors (454834).

636734 is a wasteful number, since it uses less digits than its factorization.

636734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45490.

The product of its digits is 9072, while the sum is 29.

The square root of 636734 is about 797.9561391455. The cubic root of 636734 is about 86.0305462069.

The spelling of 636734 in words is "six hundred thirty-six thousand, seven hundred thirty-four".