72240659 has 2 divisors, whose sum is σ = 72240660. Its totient is φ = 72240658.

The previous prime is 72240587. The next prime is 72240661. The reversal of 72240659 is 95604227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72240659 - 2⁸ = 72240403 is a prime.

Together with 72240661, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72242659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36120329 + 36120330.

It is an arithmetic number, because the mean of its divisors is an integer number (36120330).

Almost surely, 2^72240659 is an apocalyptic number.

72240659 is a deficient number, since it is larger than the sum of its proper divisors (1).

72240659 is an equidigital number, since it uses as much as digits as its factorization.

72240659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 72240659 is about 8499.4505116507. The cubic root of 72240659 is about 416.4797592278.

The spelling of 72240659 in words is "seventy-two million, two hundred forty thousand, six hundred fifty-nine".