79820575 has 12 divisors (see below), whose sum is σ = 99536040. Its totient is φ = 63496160.

The previous prime is 79820561. The next prime is 79820633. The reversal of 79820575 is 57502897.

It is not a de Polignac number, because 79820575 - 2²¹ = 77723423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4444 + ... + 13393.

It is an arithmetic number, because the mean of its divisors is an integer number (8294670).

Almost surely, 2^79820575 is an apocalyptic number.

79820575 is a deficient number, since it is larger than the sum of its proper divisors (19715465).

79820575 is a wasteful number, since it uses less digits than its factorization.

79820575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18026 (or 18021 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 79820575 is about 8934.2361173186. The cubic root of 79820575 is about 430.5645640078.

The spelling of 79820575 in words is "seventy-nine million, eight hundred twenty thousand, five hundred seventy-five".