422645636 has 24 divisors (see below), whose sum is σ = 895015296. Its totient is φ = 170478720.

The previous prime is 422645627. The next prime is 422645659. The reversal of 422645636 is 636546224.

It is a self number, because there is not a number n which added to its sum of digits gives 422645636.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443480 + ... + 444431.

It is an arithmetic number, because the mean of its divisors is an integer number (37292304).

Almost surely, 2^422645636 is an apocalyptic number.

It is an amenable number.

422645636 is an abundant number, since it is smaller than the sum of its proper divisors (472369660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422645636 is a wasteful number, since it uses less digits than its factorization.

422645636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887939 (or 887937 counting only the distinct ones).

The product of its digits is 207360, while the sum is 38.

The square root of 422645636 is about 20558.3471125477. The cubic root of 422645636 is about 750.4563953998.

The spelling of 422645636 in words is "four hundred twenty-two million, six hundred forty-five thousand, six hundred thirty-six".