422764691 has 4 divisors (see below), whose sum is σ = 432596472. Its totient is φ = 412932912.

The previous prime is 422764673. The next prime is 422764717. The reversal of 422764691 is 196467224.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422764691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422764621) 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, 4915826 + ... + 4915911.

It is an arithmetic number, because the mean of its divisors is an integer number (108149118).

Almost surely, 2^422764691 is an apocalyptic number.

422764691 is a deficient number, since it is larger than the sum of its proper divisors (9831781).

422764691 is an equidigital number, since it uses as much as digits as its factorization.

422764691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9831780.

The product of its digits is 145152, while the sum is 41.

The square root of 422764691 is about 20561.2424478678. The cubic root of 422764691 is about 750.5268541093.

The spelling of 422764691 in words is "four hundred twenty-two million, seven hundred sixty-four thousand, six hundred ninety-one".