630887441 has 4 divisors (see below), whose sum is σ = 631060800. Its totient is φ = 630714084.

The previous prime is 630887429. The next prime is 630887473. The reversal of 630887441 is 144788036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630887441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630887641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81101 + ... + 88538.

It is an arithmetic number, because the mean of its divisors is an integer number (157765200).

Almost surely, 2^630887441 is an apocalyptic number.

It is an amenable number.

630887441 is a deficient number, since it is larger than the sum of its proper divisors (173359).

630887441 is a wasteful number, since it uses less digits than its factorization.

630887441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173358.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 630887441 is about 25117.4728227185. The cubic root of 630887441 is about 857.6642228402.

The spelling of 630887441 in words is "six hundred thirty million, eight hundred eighty-seven thousand, four hundred forty-one".