630573821 has 8 divisors (see below), whose sum is σ = 651220224. Its totient is φ = 609946560.

The previous prime is 630573799. The next prime is 630573833. The reversal of 630573821 is 128375036.

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 630573821 - 2¹⁴ = 630557437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630573521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96566 + ... + 102888.

It is an arithmetic number, because the mean of its divisors is an integer number (81402528).

Almost surely, 2^630573821 is an apocalyptic number.

It is an amenable number.

630573821 is a deficient number, since it is larger than the sum of its proper divisors (20646403).

630573821 is a wasteful number, since it uses less digits than its factorization.

630573821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9571.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 630573821 is about 25111.2289822701. The cubic root of 630573821 is about 857.5220816703.

The spelling of 630573821 in words is "six hundred thirty million, five hundred seventy-three thousand, eight hundred twenty-one".