78860275 has 12 divisors (see below), whose sum is σ = 105309232. Its totient is φ = 58235040.

The previous prime is 78860267. The next prime is 78860291. The reversal of 78860275 is 57206887.

It is a happy number.

It is not a de Polignac number, because 78860275 - 2³ = 78860267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120999 + ... + 121648.

Almost surely, 2^78860275 is an apocalyptic number.

78860275 is a deficient number, since it is larger than the sum of its proper divisors (26448957).

78860275 is a wasteful number, since it uses less digits than its factorization.

78860275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242670 (or 242665 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 78860275 is about 8880.3307933883. The cubic root of 78860275 is about 428.8309239313.

The spelling of 78860275 in words is "seventy-eight million, eight hundred sixty thousand, two hundred seventy-five".