422877681 has 24 divisors (see below), whose sum is σ = 642269160. Its totient is φ = 267724800.

The previous prime is 422877673. The next prime is 422877761. The reversal of 422877681 is 186778224.

422877681 is a `hidden beast` number, since 422 + 87 + 76 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 37933281 + 384944400 = 6159^2 + 19620^2 .

It is not a de Polignac number, because 422877681 - 2³ = 422877673 is a prime.

It is a super-2 number, since 2×422877681² = 357651066175875522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (422870681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2641 + ... + 29201.

It is an arithmetic number, because the mean of its divisors is an integer number (26761215).

Almost surely, 2^422877681 is an apocalyptic number.

It is an amenable number.

422877681 is a deficient number, since it is larger than the sum of its proper divisors (219391479).

422877681 is a wasteful number, since it uses less digits than its factorization.

422877681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26657 (or 26654 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 422877681 is about 20563.9899095482. The cubic root of 422877681 is about 750.5937112186.

The spelling of 422877681 in words is "four hundred twenty-two million, eight hundred seventy-seven thousand, six hundred eighty-one".