79779560 has 32 divisors (see below), whose sum is σ = 205148160. Its totient is φ = 27352896.

The previous prime is 79779559. The next prime is 79779569. The reversal of 79779560 is 6597797.

It is a super-3 number, since 3×79779560³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 79779499 and 79779508.

It is not an unprimeable number, because it can be changed into a prime (79779569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142184 + ... + 142743.

It is an arithmetic number, because the mean of its divisors is an integer number (6410880).

Almost surely, 2^79779560 is an apocalyptic number.

79779560 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

79779560 is an abundant number, since it is smaller than the sum of its proper divisors (125368600).

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

79779560 is a wasteful number, since it uses less digits than its factorization.

79779560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284945 (or 284941 counting only the distinct ones).

The product of its (nonzero) digits is 833490, while the sum is 50.

The square root of 79779560 is about 8931.9404386729. The cubic root of 79779560 is about 430.4908042819.

The spelling of 79779560 in words is "seventy-nine million, seven hundred seventy-nine thousand, five hundred sixty".