78818475 has 12 divisors (see below), whose sum is σ = 130313336. Its totient is φ = 42036480.

The previous prime is 78818459. The next prime is 78818497. The reversal of 78818475 is 57481887.

It is not a de Polignac number, because 78818475 - 2⁴ = 78818459 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 525382 + ... + 525531.

Almost surely, 2^78818475 is an apocalyptic number.

78818475 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

78818475 is a deficient number, since it is larger than the sum of its proper divisors (51494861).

78818475 is a wasteful number, since it uses less digits than its factorization.

78818475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050926 (or 1050921 counting only the distinct ones).

The product of its digits is 501760, while the sum is 48.

The square root of 78818475 is about 8877.9769655029. The cubic root of 78818475 is about 428.7551430618.

The spelling of 78818475 in words is "seventy-eight million, eight hundred eighteen thousand, four hundred seventy-five".