630511022 has 4 divisors (see below), whose sum is σ = 945766536. Its totient is φ = 315255510.

The previous prime is 630510989. The next prime is 630511031. The reversal of 630511022 is 220115036.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 630510985 and 630511003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157627754 + ... + 157627757.

It is an arithmetic number, because the mean of its divisors is an integer number (236441634).

Almost surely, 2^630511022 is an apocalyptic number.

630511022 is a deficient number, since it is larger than the sum of its proper divisors (315255514).

630511022 is a wasteful number, since it uses less digits than its factorization.

630511022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315255513.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 630511022 is about 25109.9785344393. The cubic root of 630511022 is about 857.4936137811.

Adding to 630511022 its reverse (220115036), we get a palindrome (850626058).

The spelling of 630511022 in words is "six hundred thirty million, five hundred eleven thousand, twenty-two".