422646665 has 16 divisors (see below), whose sum is σ = 580199808. Its totient is φ = 289529856.

The previous prime is 422646649. The next prime is 422646727. The reversal of 422646665 is 566646224.

It is not a de Polignac number, because 422646665 - 2⁴ = 422646649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33929 + ... + 44681.

It is an arithmetic number, because the mean of its divisors is an integer number (36262488).

Almost surely, 2^422646665 is an apocalyptic number.

It is an amenable number.

422646665 is a deficient number, since it is larger than the sum of its proper divisors (157553143).

422646665 is a wasteful number, since it uses less digits than its factorization.

422646665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11888.

The product of its digits is 414720, while the sum is 41.

The square root of 422646665 is about 20558.3721388635. The cubic root of 422646665 is about 750.4570044357.

The spelling of 422646665 in words is "four hundred twenty-two million, six hundred forty-six thousand, six hundred sixty-five".