422568578 has 4 divisors (see below), whose sum is σ = 633852870. Its totient is φ = 211284288.

The previous prime is 422568577. The next prime is 422568583. The reversal of 422568578 is 875865224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 240777289 + 181791289 = 15517^2 + 13483^2 .

It is a super-2 number, since 2×422568578² = 357128406225884168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (422568577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105642143 + ... + 105642146.

Almost surely, 2^422568578 is an apocalyptic number.

422568578 is a deficient number, since it is larger than the sum of its proper divisors (211284292).

422568578 is a wasteful number, since it uses less digits than its factorization.

422568578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211284291.

The product of its digits is 1075200, while the sum is 47.

The square root of 422568578 is about 20556.4728978490. The cubic root of 422568578 is about 750.4107841526.

The spelling of 422568578 in words is "four hundred twenty-two million, five hundred sixty-eight thousand, five hundred seventy-eight".