422256861 has 64 divisors (see below), whose sum is σ = 698691840. Its totient is φ = 250387200.

The previous prime is 422256833. The next prime is 422256869. The reversal of 422256861 is 168652224.

It is a happy number.

It is not a de Polignac number, because 422256861 - 2⁹ = 422256349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422256869) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1524255 + ... + 1524531.

It is an arithmetic number, because the mean of its divisors is an integer number (10917060).

Almost surely, 2^422256861 is an apocalyptic number.

It is an amenable number.

422256861 is a deficient number, since it is larger than the sum of its proper divisors (276434979).

422256861 is a wasteful number, since it uses less digits than its factorization.

422256861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 437 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 422256861 is about 20548.8895320404. The cubic root of 422256861 is about 750.2262197593.

The spelling of 422256861 in words is "four hundred twenty-two million, two hundred fifty-six thousand, eight hundred sixty-one".