630404245 has 8 divisors (see below), whose sum is σ = 757846584. Its totient is φ = 503415744.

The previous prime is 630404239. The next prime is 630404297. The reversal of 630404245 is 542404036.

It can be written as a sum of positive squares in 4 ways, for example, as 89283601 + 541120644 = 9449^2 + 23262^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 630404245 - 2¹⁵ = 630371477 is a prime.

It is a super-2 number, since 2×630404245² = 794819024228040050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110394 + ... + 115963.

It is an arithmetic number, because the mean of its divisors is an integer number (94730823).

Almost surely, 2^630404245 is an apocalyptic number.

It is an amenable number.

630404245 is a deficient number, since it is larger than the sum of its proper divisors (127442339).

630404245 is a wasteful number, since it uses less digits than its factorization.

630404245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226919.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 630404245 is about 25107.8522578097. The cubic root of 630404245 is about 857.4452055527.

The spelling of 630404245 in words is "six hundred thirty million, four hundred four thousand, two hundred forty-five".