630747 has 20 divisors (see below), whose sum is σ = 1016400. Its totient is φ = 387504.

The previous prime is 630737. The next prime is 630797. The reversal of 630747 is 747036.

It is not a de Polignac number, because 630747 - 2¹⁰ = 629723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 630747.

It is not an unprimeable number, because it can be changed into a prime (630737) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 754 + ... + 1352.

It is an arithmetic number, because the mean of its divisors is an integer number (50820).

2⁶³⁰⁷⁴⁷ is an apocalyptic number.

630747 is a deficient number, since it is larger than the sum of its proper divisors (385653).

630747 is a wasteful number, since it uses less digits than its factorization.

630747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 630747 is about 794.1958196818. The cubic root of 630747 is about 85.7600576960.

The spelling of 630747 in words is "six hundred thirty thousand, seven hundred forty-seven".