79775263 has 4 divisors (see below), whose sum is σ = 80303728. Its totient is φ = 79246800.

The previous prime is 79775233. The next prime is 79775279. The reversal of 79775263 is 36257797.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36257797 = 1409 ⋅25733.

It is a cyclic number.

It is not a de Polignac number, because 79775263 - 2⁵ = 79775231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79775233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264006 + ... + 264307.

It is an arithmetic number, because the mean of its divisors is an integer number (20075932).

Almost surely, 2^79775263 is an apocalyptic number.

79775263 is a deficient number, since it is larger than the sum of its proper divisors (528465).

79775263 is a wasteful number, since it uses less digits than its factorization.

79775263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528464.

The product of its digits is 555660, while the sum is 46.

The square root of 79775263 is about 8931.6998941971. The cubic root of 79775263 is about 430.4830752671.

The spelling of 79775263 in words is "seventy-nine million, seven hundred seventy-five thousand, two hundred sixty-three".