646613122 has 64 divisors (see below), whose sum is σ = 1114020864. Its totient is φ = 279797760.

The previous prime is 646613101. The next prime is 646613129. The reversal of 646613122 is 221316646.

It is not an unprimeable number, because it can be changed into a prime (646613129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2682922 + ... + 2683162.

It is an arithmetic number, because the mean of its divisors is an integer number (17406576).

Almost surely, 2^646613122 is an apocalyptic number.

646613122 is a deficient number, since it is larger than the sum of its proper divisors (467407742).

646613122 is a wasteful number, since it uses less digits than its factorization.

646613122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403.

The product of its digits is 10368, while the sum is 31.

The square root of 646613122 is about 25428.5886749540. The cubic root of 646613122 is about 864.7319480832.

Adding to 646613122 its reverse (221316646), we get a palindrome (867929768).

The spelling of 646613122 in words is "six hundred forty-six million, six hundred thirteen thousand, one hundred twenty-two".