79658 has 4 divisors (see below), whose sum is σ = 119490. Its totient is φ = 39828.

The previous prime is 79657. The next prime is 79669. The reversal of 79658 is 85697.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49729 + 29929 = 223^2 + 173^2 .

It is not an unprimeable number, because it can be changed into a prime (79657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19913 + ... + 19916.

2⁷⁹⁶⁵⁸ is an apocalyptic number.

79658 is a deficient number, since it is larger than the sum of its proper divisors (39832).

79658 is a wasteful number, since it uses less digits than its factorization.

79658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39831.

The product of its digits is 15120, while the sum is 35.

The square root of 79658 is about 282.2374886510. The cubic root of 79658 is about 43.0272047066.

It can be divided in two parts, 79 and 658, that added together give a palindrome (737).

The spelling of 79658 in words is "seventy-nine thousand, six hundred fifty-eight".