78664022 has 8 divisors (see below), whose sum is σ = 118076400. Its totient is φ = 39305224.

The previous prime is 78664021. The next prime is 78664039. The reversal of 78664022 is 22046687.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78664021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9497 + ... + 15732.

It is an arithmetic number, because the mean of its divisors is an integer number (14759550).

Almost surely, 2^78664022 is an apocalyptic number.

78664022 is a deficient number, since it is larger than the sum of its proper divisors (39412378).

78664022 is a wasteful number, since it uses less digits than its factorization.

78664022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26790.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 78664022 is about 8869.2740401907. The cubic root of 78664022 is about 428.4748964914.

The spelling of 78664022 in words is "seventy-eight million, six hundred sixty-four thousand, twenty-two".