79946665 has 8 divisors (see below), whose sum is σ = 101579400. Its totient is φ = 60195072.

The previous prime is 79946663. The next prime is 79946683. The reversal of 79946665 is 56664997.

It can be written as a sum of positive squares in 4 ways, for example, as 28164249 + 51782416 = 5307^2 + 7196^2 .

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 79946665 - 2¹ = 79946663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79946663) 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, 470190 + ... + 470359.

It is an arithmetic number, because the mean of its divisors is an integer number (12697425).

Almost surely, 2^79946665 is an apocalyptic number.

It is an amenable number.

79946665 is a deficient number, since it is larger than the sum of its proper divisors (21632735).

79946665 is a wasteful number, since it uses less digits than its factorization.

79946665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940571.

The product of its digits is 2449440, while the sum is 52.

The square root of 79946665 is about 8941.2898957589. The cubic root of 79946665 is about 430.7911610736.

The spelling of 79946665 in words is "seventy-nine million, nine hundred forty-six thousand, six hundred sixty-five".