78701875 has 20 divisors (see below), whose sum is σ = 112401520. Its totient is φ = 53964000.

The previous prime is 78701869. The next prime is 78701879. The reversal of 78701875 is 57810787.

It is a happy number.

It is not a de Polignac number, because 78701875 - 2⁷ = 78701747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78701879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4620 + ... + 13369.

It is an arithmetic number, because the mean of its divisors is an integer number (5620076).

Almost surely, 2^78701875 is an apocalyptic number.

78701875 is a deficient number, since it is larger than the sum of its proper divisors (33699645).

78701875 is an equidigital number, since it uses as much as digits as its factorization.

78701875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18016 (or 18001 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 43.

The square root of 78701875 is about 8871.4077236930. The cubic root of 78701875 is about 428.5436126127.

The spelling of 78701875 in words is "seventy-eight million, seven hundred one thousand, eight hundred seventy-five".