79975 has 12 divisors (see below), whose sum is σ = 113584. Its totient is φ = 54720.

The previous prime is 79973. The next prime is 79979. The reversal of 79975 is 57997.

It is not a de Polignac number, because 79975 - 2¹ = 79973 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 7² + 9³ + 9³ + 7³ + 5⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54 + ... + 403.

2⁷⁹⁹⁷⁵ is an apocalyptic number.

79975 is a deficient number, since it is larger than the sum of its proper divisors (33609).

79975 is a wasteful number, since it uses less digits than its factorization.

79975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 469 counting only the distinct ones).

The product of its digits is 19845, while the sum is 37.

The square root of 79975 is about 282.7985148476. The cubic root of 79975 is about 43.0842049274.

The spelling of 79975 in words is "seventy-nine thousand, nine hundred seventy-five".