78964263 has 12 divisors (see below), whose sum is σ = 130353808. Its totient is φ = 45122400.

The previous prime is 78964241. The next prime is 78964273. The reversal of 78964263 is 36246987.

It is not a de Polignac number, because 78964263 - 2⁵ = 78964231 is a prime.

It is a super-2 number, since 2×78964263² = 12470709662266338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78964273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 626638 + ... + 626763.

Almost surely, 2^78964263 is an apocalyptic number.

78964263 is a deficient number, since it is larger than the sum of its proper divisors (51389545).

78964263 is a wasteful number, since it uses less digits than its factorization.

78964263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253414 (or 1253411 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 78964263 is about 8886.1838265928. The cubic root of 78964263 is about 429.0193317776.

The spelling of 78964263 in words is "seventy-eight million, nine hundred sixty-four thousand, two hundred sixty-three".