422634645 has 16 divisors (see below), whose sum is σ = 751350720. Its totient is φ = 225405072.

The previous prime is 422634623. The next prime is 422634691. The reversal of 422634645 is 546436224.

422634645 is a `hidden beast` number, since 4 + 2 + 2 + 6 + 3 + 4 + 645 = 666.

It is not a de Polignac number, because 422634645 - 2⁷ = 422634517 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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, 1565179 + ... + 1565448.

It is an arithmetic number, because the mean of its divisors is an integer number (46959420).

Almost surely, 2^422634645 is an apocalyptic number.

422634645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

422634645 is a deficient number, since it is larger than the sum of its proper divisors (328716075).

422634645 is a wasteful number, since it uses less digits than its factorization.

422634645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130641 (or 3130635 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 422634645 is about 20558.0797984637. The cubic root of 422634645 is about 750.4498900779.

The spelling of 422634645 in words is "four hundred twenty-two million, six hundred thirty-four thousand, six hundred forty-five".