72995579 has 4 divisors (see below), whose sum is σ = 73057560. Its totient is φ = 72933600.

The previous prime is 72995563. The next prime is 72995609. The reversal of 72995579 is 97559927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97559927 = 19 ⋅5134733.

It is a cyclic number.

It is not a de Polignac number, because 72995579 - 2⁴ = 72995563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72995579.

It is not an unprimeable number, because it can be changed into a prime (72995479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29189 + ... + 31590.

It is an arithmetic number, because the mean of its divisors is an integer number (18264390).

Almost surely, 2^72995579 is an apocalyptic number.

72995579 is a deficient number, since it is larger than the sum of its proper divisors (61981).

72995579 is a wasteful number, since it uses less digits than its factorization.

72995579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61980.

The product of its digits is 1786050, while the sum is 53.

The square root of 72995579 is about 8543.7450219444. The cubic root of 72995579 is about 417.9254825461.

The spelling of 72995579 in words is "seventy-two million, nine hundred ninety-five thousand, five hundred seventy-nine".