630713851 has 4 divisors (see below), whose sum is σ = 632866752. Its totient is φ = 628560952.

The previous prime is 630713849. The next prime is 630713857. The reversal of 630713851 is 158317036.

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 630713851 - 2¹ = 630713849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630713857) 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, 1076011 + ... + 1076596.

It is an arithmetic number, because the mean of its divisors is an integer number (158216688).

Almost surely, 2^630713851 is an apocalyptic number.

630713851 is a deficient number, since it is larger than the sum of its proper divisors (2152901).

630713851 is a wasteful number, since it uses less digits than its factorization.

630713851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152900.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 630713851 is about 25114.0170223722. The cubic root of 630713851 is about 857.5855529223.

The spelling of 630713851 in words is "six hundred thirty million, seven hundred thirteen thousand, eight hundred fifty-one".