630804501 has 6 divisors (see below), whose sum is σ = 911162070. Its totient is φ = 420536328.

The previous prime is 630804497. The next prime is 630804511. The reversal of 630804501 is 105408036.

It can be written as a sum of positive squares in only one way, i.e., 354380625 + 276423876 = 18825^2 + 16626^2 .

It is not a de Polignac number, because 630804501 - 2² = 630804497 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630804511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35044686 + ... + 35044703.

It is an arithmetic number, because the mean of its divisors is an integer number (151860345).

Almost surely, 2^630804501 is an apocalyptic number.

It is an amenable number.

630804501 is a deficient number, since it is larger than the sum of its proper divisors (280357569).

630804501 is a wasteful number, since it uses less digits than its factorization.

630804501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70089395 (or 70089392 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 630804501 is about 25115.8217265532. The cubic root of 630804501 is about 857.6266367440.

The spelling of 630804501 in words is "six hundred thirty million, eight hundred four thousand, five hundred one".