78885113 has 4 divisors (see below), whose sum is σ = 79015680. Its totient is φ = 78754548.

The previous prime is 78885097. The next prime is 78885137. The reversal of 78885113 is 31158887.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31158887 = 4457 ⋅6991.

It is a cyclic number.

It is not a de Polignac number, because 78885113 - 2⁴ = 78885097 is a prime.

It is a super-2 number, since 2×78885113² = 12445722106045538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78885143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64373 + ... + 65586.

It is an arithmetic number, because the mean of its divisors is an integer number (19753920).

Almost surely, 2^78885113 is an apocalyptic number.

It is an amenable number.

78885113 is a deficient number, since it is larger than the sum of its proper divisors (130567).

78885113 is a wasteful number, since it uses less digits than its factorization.

78885113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130566.

The product of its digits is 53760, while the sum is 41.

The square root of 78885113 is about 8881.7291672286. The cubic root of 78885113 is about 428.8759410388.

The spelling of 78885113 in words is "seventy-eight million, eight hundred eighty-five thousand, one hundred thirteen".