79680545 has 24 divisors (see below), whose sum is σ = 113216064. Its totient is φ = 52734528.

The previous prime is 79680529. The next prime is 79680577. The reversal of 79680545 is 54508697.

It is not a de Polignac number, because 79680545 - 2⁴ = 79680529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79680496 and 79680505.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28082 + ... + 30788.

It is an arithmetic number, because the mean of its divisors is an integer number (4717336).

Almost surely, 2^79680545 is an apocalyptic number.

It is an amenable number.

79680545 is a deficient number, since it is larger than the sum of its proper divisors (33535519).

79680545 is a wasteful number, since it uses less digits than its factorization.

79680545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777 (or 2748 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 79680545 is about 8926.3959692588. The cubic root of 79680545 is about 430.3126354492.

The spelling of 79680545 in words is "seventy-nine million, six hundred eighty thousand, five hundred forty-five".