78965913 has 8 divisors (see below), whose sum is σ = 113387008. Its totient is φ = 48594384.

The previous prime is 78965911. The next prime is 78965917. The reversal of 78965913 is 31956987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78965913 - 2¹ = 78965911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78965911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012345 + ... + 1012422.

It is an arithmetic number, because the mean of its divisors is an integer number (14173376).

Almost surely, 2^78965913 is an apocalyptic number.

It is an amenable number.

78965913 is a deficient number, since it is larger than the sum of its proper divisors (34421095).

78965913 is a wasteful number, since it uses less digits than its factorization.

78965913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024783.

The product of its digits is 408240, while the sum is 48.

The square root of 78965913 is about 8886.2766668611. The cubic root of 78965913 is about 429.0223199520.

The spelling of 78965913 in words is "seventy-eight million, nine hundred sixty-five thousand, nine hundred thirteen".