78750986 has 8 divisors (see below), whose sum is σ = 118199844. Its totient is φ = 39351040.

The previous prime is 78750967. The next prime is 78750989. The reversal of 78750986 is 68905787.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 78234025 + 516961 = 8845^2 + 719^2 .

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

It is not an unprimeable number, because it can be changed into a prime (78750989) 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, 7895 + ... + 14826.

Almost surely, 2^78750986 is an apocalyptic number.

78750986 is a deficient number, since it is larger than the sum of its proper divisors (39448858).

78750986 is a wasteful number, since it uses less digits than its factorization.

78750986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24456.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 78750986 is about 8874.1752292819. The cubic root of 78750986 is about 428.6327330187.

The spelling of 78750986 in words is "seventy-eight million, seven hundred fifty thousand, nine hundred eighty-six".