744636 has 12 divisors (see below), whose sum is σ = 1737512. Its totient is φ = 248208.

The previous prime is 744607. The next prime is 744637. The reversal of 744636 is 636447.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 744636.

It is not an unprimeable number, because it can be changed into a prime (744637) by changing a digit.

744636 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31015 + ... + 31038.

2⁷⁴⁴⁶³⁶ is an apocalyptic number.

It is an amenable number.

744636 is an abundant number, since it is smaller than the sum of its proper divisors (992876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

744636 is a wasteful number, since it uses less digits than its factorization.

744636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62060 (or 62058 counting only the distinct ones).

The product of its digits is 12096, while the sum is 30.

The square root of 744636 is about 862.9229397808. The cubic root of 744636 is about 90.6389104291.

The spelling of 744636 in words is "seven hundred forty-four thousand, six hundred thirty-six".