79808616 has 24 divisors (see below), whose sum is σ = 216148530. Its totient is φ = 26602848.

The previous prime is 79808611. The next prime is 79808621. The reversal of 79808616 is 61680897.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79808611) and next prime (79808621).

It can be written as a sum of positive squares in only one way, i.e., 75168900 + 4639716 = 8670^2 + 2154^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×79808616³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (79808611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 554155 + ... + 554298.

Almost surely, 2^79808616 is an apocalyptic number.

It is an amenable number.

79808616 is an abundant number, since it is smaller than the sum of its proper divisors (136339914).

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

79808616 is a wasteful number, since it uses less digits than its factorization.

79808616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108465 (or 1108458 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 79808616 is about 8933.5668128693. The cubic root of 79808616 is about 430.5430600334.

The spelling of 79808616 in words is "seventy-nine million, eight hundred eight thousand, six hundred sixteen".