630880281 has 12 divisors (see below), whose sum is σ = 913655808. Its totient is φ = 419486424.

The previous prime is 630880279. The next prime is 630880291. The reversal of 630880281 is 182088036.

It is not a de Polignac number, because 630880281 - 2¹ = 630880279 is a prime.

It is a super-2 number, since 2×630880281² = 796019857909277922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (630880291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88065 + ... + 94958.

It is an arithmetic number, because the mean of its divisors is an integer number (76137984).

Almost surely, 2^630880281 is an apocalyptic number.

It is an amenable number.

630880281 is a deficient number, since it is larger than the sum of its proper divisors (282775527).

630880281 is a wasteful number, since it uses less digits than its factorization.

630880281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183412 (or 183409 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 630880281 is about 25117.3302920513. The cubic root of 630880281 is about 857.6609782577.

The spelling of 630880281 in words is "six hundred thirty million, eight hundred eighty thousand, two hundred eighty-one".