422678761 has 4 divisors (see below), whose sum is σ = 427036372. Its totient is φ = 418321152.

The previous prime is 422678759. The next prime is 422678791. The reversal of 422678761 is 167876224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 144456361 + 278222400 = 12019^2 + 16680^2 .

It is a cyclic number.

It is not a de Polignac number, because 422678761 - 2¹ = 422678759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422678791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2178660 + ... + 2178853.

It is an arithmetic number, because the mean of its divisors is an integer number (106759093).

Almost surely, 2^422678761 is an apocalyptic number.

It is an amenable number.

422678761 is a deficient number, since it is larger than the sum of its proper divisors (4357611).

422678761 is an equidigital number, since it uses as much as digits as its factorization.

422678761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357610.

The product of its digits is 225792, while the sum is 43.

The square root of 422678761 is about 20559.1527305967. The cubic root of 422678761 is about 750.4760006487.

The spelling of 422678761 in words is "four hundred twenty-two million, six hundred seventy-eight thousand, seven hundred sixty-one".