78726875 has 10 divisors (see below), whose sum is σ = 98377884. Its totient is φ = 62981000.

The previous prime is 78726853. The next prime is 78726877. The reversal of 78726875 is 57862787.

It is not a de Polignac number, because 78726875 - 2⁶ = 78726811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78726877) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 62357 + ... + 63606.

Almost surely, 2^78726875 is an apocalyptic number.

78726875 is a deficient number, since it is larger than the sum of its proper divisors (19651009).

78726875 is an equidigital number, since it uses as much as digits as its factorization.

78726875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125983 (or 125968 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 50.

The square root of 78726875 is about 8872.8166328399. The cubic root of 78726875 is about 428.5889840692.

The spelling of 78726875 in words is "seventy-eight million, seven hundred twenty-six thousand, eight hundred seventy-five".