79066881 has 16 divisors (see below), whose sum is σ = 124027200. Its totient is φ = 49610304.

The previous prime is 79066877. The next prime is 79066907. The reversal of 79066881 is 18866097.

It is a happy number.

It is not a de Polignac number, because 79066881 - 2² = 79066877 is a prime.

It is a super-2 number, since 2×79066881² = 12503143342136322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79066681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85671 + ... + 86588.

It is an arithmetic number, because the mean of its divisors is an integer number (7751700).

Almost surely, 2^79066881 is an apocalyptic number.

It is an amenable number.

79066881 is a deficient number, since it is larger than the sum of its proper divisors (44960319).

79066881 is a wasteful number, since it uses less digits than its factorization.

79066881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172285 (or 172279 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 79066881 is about 8891.9559715509. The cubic root of 79066881 is about 429.2050953409.

The spelling of 79066881 in words is "seventy-nine million, sixty-six thousand, eight hundred eighty-one".