630949567 has 4 divisors (see below), whose sum is σ = 648002296. Its totient is φ = 613896840.

The previous prime is 630949513. The next prime is 630949601. The reversal of 630949567 is 765949036.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630949567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 630949567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630949367) 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, 8526309 + ... + 8526382.

It is an arithmetic number, because the mean of its divisors is an integer number (162000574).

Almost surely, 2^630949567 is an apocalyptic number.

630949567 is a deficient number, since it is larger than the sum of its proper divisors (17052729).

630949567 is a wasteful number, since it uses less digits than its factorization.

630949567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17052728.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The square root of 630949567 is about 25118.7095010870. The cubic root of 630949567 is about 857.6923744539.

The spelling of 630949567 in words is "six hundred thirty million, nine hundred forty-nine thousand, five hundred sixty-seven".