79660091 has 8 divisors (see below), whose sum is σ = 91544544. Its totient is φ = 67901760.

The previous prime is 79660081. The next prime is 79660151. The reversal of 79660091 is 19006697.

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 79660091 - 2²² = 75465787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79660081) 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, 30170 + ... + 32703.

It is an arithmetic number, because the mean of its divisors is an integer number (11443068).

Almost surely, 2^79660091 is an apocalyptic number.

79660091 is a deficient number, since it is larger than the sum of its proper divisors (11884453).

79660091 is a wasteful number, since it uses less digits than its factorization.

79660091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63061.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 79660091 is about 8925.2501925716. The cubic root of 79660091 is about 430.2758118729.

The spelling of 79660091 in words is "seventy-nine million, six hundred sixty thousand, ninety-one".