72898997 has 4 divisors (see below), whose sum is σ = 72923040. Its totient is φ = 72874956.

The previous prime is 72898957. The next prime is 72899039. The reversal of 72898997 is 79989827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72898997 - 2⁸ = 72898741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72898957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6683 + ... + 13800.

It is an arithmetic number, because the mean of its divisors is an integer number (18230760).

Almost surely, 2^72898997 is an apocalyptic number.

It is an amenable number.

72898997 is a deficient number, since it is larger than the sum of its proper divisors (24043).

72898997 is a wasteful number, since it uses less digits than its factorization.

72898997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24042.

The product of its digits is 4572288, while the sum is 59.

The square root of 72898997 is about 8538.0909458731. The cubic root of 72898997 is about 417.7410791671.

The spelling of 72898997 in words is "seventy-two million, eight hundred ninety-eight thousand, nine hundred ninety-seven".