79457663 has 4 divisors (see below), whose sum is σ = 82912368. Its totient is φ = 76002960.

The previous prime is 79457641. The next prime is 79457699. The reversal of 79457663 is 36675497.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79457663 - 2¹⁰ = 79456639 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 (79457603) 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, 1727318 + ... + 1727363.

It is an arithmetic number, because the mean of its divisors is an integer number (20728092).

Almost surely, 2^79457663 is an apocalyptic number.

79457663 is a deficient number, since it is larger than the sum of its proper divisors (3454705).

79457663 is a wasteful number, since it uses less digits than its factorization.

79457663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454704.

The product of its digits is 952560, while the sum is 47.

The square root of 79457663 is about 8913.9027928287. The cubic root of 79457663 is about 429.9110380230.

The spelling of 79457663 in words is "seventy-nine million, four hundred fifty-seven thousand, six hundred sixty-three".