79666634 has 8 divisors (see below), whose sum is σ = 119546820. Its totient is φ = 39817696.

The previous prime is 79666597. The next prime is 79666669. The reversal of 79666634 is 43666697.

It can be written as a sum of positive squares in 2 ways, for example, as 79263409 + 403225 = 8903^2 + 635^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212 + ... + 12624.

Almost surely, 2^79666634 is an apocalyptic number.

79666634 is a deficient number, since it is larger than the sum of its proper divisors (39880186).

79666634 is a wasteful number, since it uses less digits than its factorization.

79666634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15624.

The product of its digits is 979776, while the sum is 47.

The square root of 79666634 is about 8925.6167293919. The cubic root of 79666634 is about 430.2875919982.

The spelling of 79666634 in words is "seventy-nine million, six hundred sixty-six thousand, six hundred thirty-four".