79661434 has 8 divisors (see below), whose sum is σ = 123612660. Its totient is φ = 38457216.

The previous prime is 79661411. The next prime is 79661437. The reversal of 79661434 is 43416697.

It can be written as a sum of positive squares in 2 ways, for example, as 71453209 + 8208225 = 8453^2 + 2865^2 .

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

It is not an unprimeable number, because it can be changed into a prime (79661437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686679 + ... + 686794.

Almost surely, 2^79661434 is an apocalyptic number.

79661434 is a deficient number, since it is larger than the sum of its proper divisors (43951226).

79661434 is a wasteful number, since it uses less digits than its factorization.

79661434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373504.

The product of its digits is 108864, while the sum is 40.

The square root of 79661434 is about 8925.3254282407. The cubic root of 79661434 is about 430.2782298849.

The spelling of 79661434 in words is "seventy-nine million, six hundred sixty-one thousand, four hundred thirty-four".