78763875 has 16 divisors (see below), whose sum is σ = 131063712. Its totient is φ = 42007200.

The previous prime is 78763847. The next prime is 78763889. The reversal of 78763875 is 57836787.

It is a de Polignac number, because none of the positive numbers 2^k-78763875 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104644 + ... + 105393.

It is an arithmetic number, because the mean of its divisors is an integer number (8191482).

Almost surely, 2^78763875 is an apocalyptic number.

78763875 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

78763875 is a deficient number, since it is larger than the sum of its proper divisors (52299837).

78763875 is a wasteful number, since it uses less digits than its factorization.

78763875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210055 (or 210045 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 51.

The square root of 78763875 is about 8874.9014079031. The cubic root of 78763875 is about 428.6561162008.

The spelling of 78763875 in words is "seventy-eight million, seven hundred sixty-three thousand, eight hundred seventy-five".