79541663 has 4 divisors (see below), whose sum is σ = 80728920. Its totient is φ = 78354408.

The previous prime is 79541653. The next prime is 79541677. The reversal of 79541663 is 36614597.

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 79541663 - 2²² = 75347359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79541663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79541633) 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, 593528 + ... + 593661.

It is an arithmetic number, because the mean of its divisors is an integer number (20182230).

Almost surely, 2^79541663 is an apocalyptic number.

79541663 is a deficient number, since it is larger than the sum of its proper divisors (1187257).

79541663 is a wasteful number, since it uses less digits than its factorization.

79541663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187256.

The product of its digits is 136080, while the sum is 41.

The square root of 79541663 is about 8918.6132890713. The cubic root of 79541663 is about 430.0624805549.

The spelling of 79541663 in words is "seventy-nine million, five hundred forty-one thousand, six hundred sixty-three".