630231879 has 8 divisors (see below), whose sum is σ = 840706672. Its totient is φ = 419955840.

The previous prime is 630231863. The next prime is 630231893. The reversal of 630231879 is 978132036.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 630231879 - 2⁴ = 630231863 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 (630231379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42124 + ... + 55089.

It is an arithmetic number, because the mean of its divisors is an integer number (105088334).

Almost surely, 2^630231879 is an apocalyptic number.

630231879 is a deficient number, since it is larger than the sum of its proper divisors (210474793).

630231879 is a wasteful number, since it uses less digits than its factorization.

630231879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99377.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 630231879 is about 25104.4195113131. The cubic root of 630231879 is about 857.3670504781.

The spelling of 630231879 in words is "six hundred thirty million, two hundred thirty-one thousand, eight hundred seventy-nine".