630867253 has 4 divisors (see below), whose sum is σ = 658296288. Its totient is φ = 603438220.

The previous prime is 630867239. The next prime is 630867271. The reversal of 630867253 is 352768036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 630867253 - 2⁵ = 630867221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630867553) 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, 13714483 + ... + 13714528.

It is an arithmetic number, because the mean of its divisors is an integer number (164574072).

Almost surely, 2^630867253 is an apocalyptic number.

It is an amenable number.

630867253 is a deficient number, since it is larger than the sum of its proper divisors (27429035).

630867253 is a wasteful number, since it uses less digits than its factorization.

630867253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27429034.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 630867253 is about 25117.0709478633. The cubic root of 630867253 is about 857.6550745047.

The spelling of 630867253 in words is "six hundred thirty million, eight hundred sixty-seven thousand, two hundred fifty-three".