78672875 has 8 divisors (see below), whose sum is σ = 98183904. Its totient is φ = 62938200.

The previous prime is 78672871. The next prime is 78672883. The reversal of 78672875 is 57827687.

It is not a de Polignac number, because 78672875 - 2² = 78672871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78672871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314567 + ... + 314816.

It is an arithmetic number, because the mean of its divisors is an integer number (12272988).

Almost surely, 2^78672875 is an apocalyptic number.

78672875 is a deficient number, since it is larger than the sum of its proper divisors (19511029).

78672875 is an equidigital number, since it uses as much as digits as its factorization.

78672875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629398 (or 629388 counting only the distinct ones).

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

The square root of 78672875 is about 8869.7731087103. The cubic root of 78672875 is about 428.4909696842.

The spelling of 78672875 in words is "seventy-eight million, six hundred seventy-two thousand, eight hundred seventy-five".