79645523 has 4 divisors (see below), whose sum is σ = 79804368. Its totient is φ = 79486680.

The previous prime is 79645519. The next prime is 79645529. The reversal of 79645523 is 32554697.

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 79645523 - 2² = 79645519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79645529) 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, 78668 + ... + 79673.

It is an arithmetic number, because the mean of its divisors is an integer number (19951092).

Almost surely, 2^79645523 is an apocalyptic number.

79645523 is a deficient number, since it is larger than the sum of its proper divisors (158845).

79645523 is a wasteful number, since it uses less digits than its factorization.

79645523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158844.

The product of its digits is 226800, while the sum is 41.

The square root of 79645523 is about 8924.4340436803. The cubic root of 79645523 is about 430.2495810878.

The spelling of 79645523 in words is "seventy-nine million, six hundred forty-five thousand, five hundred twenty-three".