630816995 has 4 divisors (see below), whose sum is σ = 756980400. Its totient is φ = 504653592.

The previous prime is 630816983. The next prime is 630817027. The reversal of 630816995 is 599618036.

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 630816995 - 2⁶ = 630816931 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 63081695 + ... + 63081704.

It is an arithmetic number, because the mean of its divisors is an integer number (189245100).

Almost surely, 2^630816995 is an apocalyptic number.

630816995 is a deficient number, since it is larger than the sum of its proper divisors (126163405).

630816995 is a wasteful number, since it uses less digits than its factorization.

630816995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126163404.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 630816995 is about 25116.0704529988. The cubic root of 630816995 is about 857.6322988874.

The spelling of 630816995 in words is "six hundred thirty million, eight hundred sixteen thousand, nine hundred ninety-five".