646533230 has 32 divisors (see below), whose sum is σ = 1334784960. Its totient is φ = 220872960.

The previous prime is 646533211. The next prime is 646533247. The reversal of 646533230 is 32335646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3236 + ... + 36104.

It is an arithmetic number, because the mean of its divisors is an integer number (41712030).

Almost surely, 2^646533230 is an apocalyptic number.

646533230 is an abundant number, since it is smaller than the sum of its proper divisors (688251730).

646533230 is a wasteful number, since it uses less digits than its factorization.

646533230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33164.

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 646533230 is about 25427.0177173809. The cubic root of 646533230 is about 864.6963327578.

Adding to 646533230 its reverse (32335646), we get a palindrome (678868876).

The spelling of 646533230 in words is "six hundred forty-six million, five hundred thirty-three thousand, two hundred thirty".