79743661 has 8 divisors (see below), whose sum is σ = 80932320. Its totient is φ = 78560592.

The previous prime is 79743619. The next prime is 79743673. The reversal of 79743661 is 16634797.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79743661 - 2⁹ = 79743149 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 (79743611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33631 + ... + 35923.

It is an arithmetic number, because the mean of its divisors is an integer number (10116540).

Almost surely, 2^79743661 is an apocalyptic number.

It is an amenable number.

79743661 is a deficient number, since it is larger than the sum of its proper divisors (1188659).

79743661 is a wasteful number, since it uses less digits than its factorization.

79743661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795.

The product of its digits is 190512, while the sum is 43.

The square root of 79743661 is about 8929.9306268302. The cubic root of 79743661 is about 430.4262242150.

The spelling of 79743661 in words is "seventy-nine million, seven hundred forty-three thousand, six hundred sixty-one".