78734113 has 4 divisors (see below), whose sum is σ = 80862100. Its totient is φ = 76606128.

The previous prime is 78734111. The next prime is 78734137. The reversal of 78734113 is 31143787.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32398864 + 46335249 = 5692^2 + 6807^2 .

It is a cyclic number.

It is not a de Polignac number, because 78734113 - 2¹ = 78734111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78734111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063938 + ... + 1064011.

It is an arithmetic number, because the mean of its divisors is an integer number (20215525).

Almost surely, 2^78734113 is an apocalyptic number.

It is an amenable number.

78734113 is a deficient number, since it is larger than the sum of its proper divisors (2127987).

78734113 is a wasteful number, since it uses less digits than its factorization.

78734113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127986.

The product of its digits is 14112, while the sum is 34.

The square root of 78734113 is about 8873.2244984560. The cubic root of 78734113 is about 428.6021182203.

The spelling of 78734113 in words is "seventy-eight million, seven hundred thirty-four thousand, one hundred thirteen".