78660422 has 16 divisors (see below), whose sum is σ = 120821760. Its totient is φ = 38391048.

The previous prime is 78660419. The next prime is 78660443. The reversal of 78660422 is 22406687.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44153 + ... + 45899.

It is an arithmetic number, because the mean of its divisors is an integer number (7551360).

Almost surely, 2^78660422 is an apocalyptic number.

78660422 is a deficient number, since it is larger than the sum of its proper divisors (42161338).

78660422 is a wasteful number, since it uses less digits than its factorization.

78660422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275.

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

The square root of 78660422 is about 8869.0710900297. The cubic root of 78660422 is about 428.4683601142.

The spelling of 78660422 in words is "seventy-eight million, six hundred sixty thousand, four hundred twenty-two".