78061113 has 24 divisors (see below), whose sum is σ = 122562440. Its totient is φ = 47589120.

The previous prime is 78061091. The next prime is 78061117. The reversal of 78061113 is 31116087.

It can be written as a sum of positive squares in 4 ways, for example, as 480249 + 77580864 = 693^2 + 8808^2 .

It is not a de Polignac number, because 78061113 - 2¹² = 78057017 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (78061117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9693 + ... + 15813.

Almost surely, 2^78061113 is an apocalyptic number.

It is an amenable number.

78061113 is a deficient number, since it is larger than the sum of its proper divisors (44501327).

78061113 is a wasteful number, since it uses less digits than its factorization.

78061113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6249 (or 6246 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 78061113 is about 8835.2200312160. The cubic root of 78061113 is about 427.3774266421.

The spelling of 78061113 in words is "seventy-eight million, sixty-one thousand, one hundred thirteen".