630646043 has 4 divisors (see below), whose sum is σ = 663837960. Its totient is φ = 597454128.

The previous prime is 630645979. The next prime is 630646061. The reversal of 630646043 is 340646036.

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

It is a cyclic number.

It is not a de Polignac number, because 630646043 - 2⁶ = 630645979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630646063) 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, 16595930 + ... + 16595967.

It is an arithmetic number, because the mean of its divisors is an integer number (165959490).

Almost surely, 2^630646043 is an apocalyptic number.

630646043 is a deficient number, since it is larger than the sum of its proper divisors (33191917).

630646043 is a wasteful number, since it uses less digits than its factorization.

630646043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33191916.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 630646043 is about 25112.6669830187. Note that the first 3 decimals coincide. The cubic root of 630646043 is about 857.5548188342.

The spelling of 630646043 in words is "six hundred thirty million, six hundred forty-six thousand, forty-three".