630904884479 has 4 divisors (see below), whose sum is σ = 635443768680. Its totient is φ = 626366000280.

The previous prime is 630904884469. The next prime is 630904884481. The reversal of 630904884479 is 974488409036.

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-630904884479 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 (630904884409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2269441892 + ... + 2269442169.

It is an arithmetic number, because the mean of its divisors is an integer number (158860942170).

Almost surely, 2^630904884479 is an apocalyptic number.

630904884479 is a deficient number, since it is larger than the sum of its proper divisors (4538884201).

630904884479 is a wasteful number, since it uses less digits than its factorization.

630904884479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538884200.

The product of its (nonzero) digits is 41803776, while the sum is 62.

The spelling of 630904884479 in words is "six hundred thirty billion, nine hundred four million, eight hundred eighty-four thousand, four hundred seventy-nine".