78764995 has 16 divisors (see below), whose sum is σ = 104431680. Its totient is φ = 56725504.

The previous prime is 78764993. The next prime is 78765031. The reversal of 78764995 is 59946787.

It is a cyclic number.

It is not a de Polignac number, because 78764995 - 2¹ = 78764993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78764993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18190 + ... + 22099.

It is an arithmetic number, because the mean of its divisors is an integer number (6526980).

Almost surely, 2^78764995 is an apocalyptic number.

78764995 is a deficient number, since it is larger than the sum of its proper divisors (25666685).

78764995 is a wasteful number, since it uses less digits than its factorization.

78764995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40334.

The product of its digits is 3810240, while the sum is 55.

The square root of 78764995 is about 8874.9645069713. The cubic root of 78764995 is about 428.6581479807.

The spelling of 78764995 in words is "seventy-eight million, seven hundred sixty-four thousand, nine hundred ninety-five".