630021146 has 16 divisors (see below), whose sum is σ = 950071680. Its totient is φ = 313335840.

The previous prime is 630021137. The next prime is 630021149. The reversal of 630021146 is 641120036.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (630021149) 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, 351665 + ... + 353451.

It is an arithmetic number, because the mean of its divisors is an integer number (59379480).

Almost surely, 2^630021146 is an apocalyptic number.

630021146 is a deficient number, since it is larger than the sum of its proper divisors (320050534).

630021146 is a wasteful number, since it uses less digits than its factorization.

630021146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 630021146 is about 25100.2220308905. Note that the first 3 decimals coincide. The cubic root of 630021146 is about 857.2714794785.

The spelling of 630021146 in words is "six hundred thirty million, twenty-one thousand, one hundred forty-six".