630787 has 4 divisors (see below), whose sum is σ = 644256. Its totient is φ = 617320.

The previous prime is 630737. The next prime is 630797. The reversal of 630787 is 787036.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 630787 - 2⁷ = 630659 is a prime.

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

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 6664 + ... + 6757.

It is an arithmetic number, because the mean of its divisors is an integer number (161064).

2⁶³⁰⁷⁸⁷ is an apocalyptic number.

630787 is a deficient number, since it is larger than the sum of its proper divisors (13469).

630787 is a wasteful number, since it uses less digits than its factorization.

630787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13468.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 630787 is about 794.2210019887. The cubic root of 630787 is about 85.7618705358.

The spelling of 630787 in words is "six hundred thirty thousand, seven hundred eighty-seven".