72993311 has 2 divisors, whose sum is σ = 72993312. Its totient is φ = 72993310.

The previous prime is 72993301. The next prime is 72993353. The reversal of 72993311 is 11339927.

It is a weak prime.

It is an emirp because it is prime and its reverse (11339927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72993311 - 2¹⁸ = 72731167 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72993301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36496655 + 36496656.

It is an arithmetic number, because the mean of its divisors is an integer number (36496656).

Almost surely, 2^72993311 is an apocalyptic number.

72993311 is a deficient number, since it is larger than the sum of its proper divisors (1).

72993311 is an equidigital number, since it uses as much as digits as its factorization.

72993311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 35.

The square root of 72993311 is about 8543.6122922333. The cubic root of 72993311 is about 417.9211541341.

The spelling of 72993311 in words is "seventy-two million, nine hundred ninety-three thousand, three hundred eleven".