79558660 has 12 divisors (see below), whose sum is σ = 167073228. Its totient is φ = 31823456.

The previous prime is 79558649. The next prime is 79558663. The reversal of 79558660 is 6685597.

It can be written as a sum of positive squares in 2 ways, for example, as 43270084 + 36288576 = 6578^2 + 6024^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 79558660.

It is not an unprimeable number, because it can be changed into a prime (79558663) 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 3 ways as a sum of consecutive naturals, for example, 1988947 + ... + 1988986.

It is an arithmetic number, because the mean of its divisors is an integer number (13922769).

Almost surely, 2^79558660 is an apocalyptic number.

It is an amenable number.

79558660 is an abundant number, since it is smaller than the sum of its proper divisors (87514568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79558660 is a wasteful number, since it uses less digits than its factorization.

79558660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977942 (or 3977940 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 79558660 is about 8919.5661329462. The cubic root of 79558660 is about 430.0931112588.

The spelling of 79558660 in words is "seventy-nine million, five hundred fifty-eight thousand, six hundred sixty".