630898401 has 24 divisors (see below), whose sum is σ = 1014642624. Its totient is φ = 341534880.

The previous prime is 630898399. The next prime is 630898421. The reversal of 630898401 is 104898036.

It is not a de Polignac number, because 630898401 - 2¹ = 630898399 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 630898401.

It is not an unprimeable number, because it can be changed into a prime (630898421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34030 + ... + 49191.

It is an arithmetic number, because the mean of its divisors is an integer number (42276776).

Almost surely, 2^630898401 is an apocalyptic number.

It is an amenable number.

630898401 is a deficient number, since it is larger than the sum of its proper divisors (383744223).

630898401 is a wasteful number, since it uses less digits than its factorization.

630898401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83269 (or 83250 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 630898401 is about 25117.6909965864. The cubic root of 630898401 is about 857.6691893603.

The spelling of 630898401 in words is "six hundred thirty million, eight hundred ninety-eight thousand, four hundred one".