79966281 has 8 divisors (see below), whose sum is σ = 107218080. Its totient is φ = 53012672.

The previous prime is 79966279. The next prime is 79966291. The reversal of 79966281 is 18266997.

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 79966281 - 2¹ = 79966279 is a prime.

It is a super-2 number, since 2×79966281² = 12789212193941922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79966281.

It is not an unprimeable number, because it can be changed into a prime (79966261) 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, 73920 + ... + 74993.

It is an arithmetic number, because the mean of its divisors is an integer number (13402260).

Almost surely, 2^79966281 is an apocalyptic number.

It is an amenable number.

79966281 is a deficient number, since it is larger than the sum of its proper divisors (27251799).

79966281 is a wasteful number, since it uses less digits than its factorization.

79966281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149095.

The product of its digits is 326592, while the sum is 48.

The square root of 79966281 is about 8942.3867619333. The cubic root of 79966281 is about 430.8263916796.

The spelling of 79966281 in words is "seventy-nine million, nine hundred sixty-six thousand, two hundred eighty-one".