79647066 has 24 divisors (see below), whose sum is σ = 172759860. Its totient is φ = 26519616.

The previous prime is 79647041. The next prime is 79647067. The reversal of 79647066 is 66074697.

It can be written as a sum of positive squares in 2 ways, for example, as 78588225 + 1058841 = 8865^2 + 1029^2 .

It is not an unprimeable number, because it can be changed into a prime (79647067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19620 + ... + 23328.

Almost surely, 2^79647066 is an apocalyptic number.

79647066 is an abundant number, since it is smaller than the sum of its proper divisors (93112794).

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

79647066 is a wasteful number, since it uses less digits than its factorization.

79647066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4910 (or 4907 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 79647066 is about 8924.5204913205. The cubic root of 79647066 is about 430.2523595274.

The spelling of 79647066 in words is "seventy-nine million, six hundred forty-seven thousand, sixty-six".