78874713 has 24 divisors (see below), whose sum is σ = 123901128. Its totient is φ = 48148992.

The previous prime is 78874709. The next prime is 78874717. The reversal of 78874713 is 31747887.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78874709) and next prime (78874717).

It can be written as a sum of positive squares in 4 ways, for example, as 64834704 + 14040009 = 8052^2 + 3747^2 .

It is not a de Polignac number, because 78874713 - 2² = 78874709 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78874717) 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, 1306 + ... + 12627.

It is an arithmetic number, because the mean of its divisors is an integer number (5162547).

Almost surely, 2^78874713 is an apocalyptic number.

It is an amenable number.

78874713 is a deficient number, since it is larger than the sum of its proper divisors (45026415).

78874713 is a wasteful number, since it uses less digits than its factorization.

78874713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13993 (or 13990 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 78874713 is about 8881.1436763516. The cubic root of 78874713 is about 428.8570929290.

The spelling of 78874713 in words is "seventy-eight million, eight hundred seventy-four thousand, seven hundred thirteen".