78765233 has 8 divisors (see below), whose sum is σ = 84210048. Its totient is φ = 73410624.

The previous prime is 78765221. The next prime is 78765251. The reversal of 78765233 is 33256787.

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

It is not a de Polignac number, because 78765233 - 2²⁰ = 77716657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78765263) 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, 20741 + ... + 24242.

It is an arithmetic number, because the mean of its divisors is an integer number (10526256).

Almost surely, 2^78765233 is an apocalyptic number.

It is an amenable number.

78765233 is a deficient number, since it is larger than the sum of its proper divisors (5444815).

78765233 is a wasteful number, since it uses less digits than its factorization.

78765233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45103.

The product of its digits is 211680, while the sum is 41.

The square root of 78765233 is about 8874.9779154655. The cubic root of 78765233 is about 428.6585797314.

The spelling of 78765233 in words is "seventy-eight million, seven hundred sixty-five thousand, two hundred thirty-three".