213163646 has 32 divisors (see below), whose sum is σ = 348727680. Its totient is φ = 97344000.

The previous prime is 213163607. The next prime is 213163651. The reversal of 213163646 is 646361312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163196 + ... + 164496.

It is an arithmetic number, because the mean of its divisors is an integer number (10897740).

Almost surely, 2^213163646 is an apocalyptic number.

213163646 is a deficient number, since it is larger than the sum of its proper divisors (135564034).

213163646 is a wasteful number, since it uses less digits than its factorization.

213163646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460.

The product of its digits is 15552, while the sum is 32.

The square root of 213163646 is about 14600.1248624798. The cubic root of 213163646 is about 597.3621663472.

The spelling of 213163646 in words is "two hundred thirteen million, one hundred sixty-three thousand, six hundred forty-six".