718636 has 6 divisors (see below), whose sum is σ = 1257620. Its totient is φ = 359316.

The previous prime is 718633. The next prime is 718657. The reversal of 718636 is 636817.

It is a junction number, because it is equal to n+sod(n) for n = 718598 and 718607.

It is not an unprimeable number, because it can be changed into a prime (718633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89826 + ... + 89833.

2⁷¹⁸⁶³⁶ is an apocalyptic number.

It is an amenable number.

718636 is a deficient number, since it is larger than the sum of its proper divisors (538984).

718636 is a wasteful number, since it uses less digits than its factorization.

718636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179663 (or 179661 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 718636 is about 847.7240116925. The cubic root of 718636 is about 89.5714606704.

The spelling of 718636 in words is "seven hundred eighteen thousand, six hundred thirty-six".