72727843 has 2 divisors, whose sum is σ = 72727844. Its totient is φ = 72727842.

The previous prime is 72727807. The next prime is 72727859. The reversal of 72727843 is 34872727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72727843 - 2¹³ = 72719651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72727796 and 72727805.

It is not a weakly prime, because it can be changed into another prime (72727043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36363921 + 36363922.

It is an arithmetic number, because the mean of its divisors is an integer number (36363922).

Almost surely, 2^72727843 is an apocalyptic number.

72727843 is a deficient number, since it is larger than the sum of its proper divisors (1).

72727843 is an equidigital number, since it uses as much as digits as its factorization.

72727843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131712, while the sum is 40.

The square root of 72727843 is about 8528.0620893612. The cubic root of 72727843 is about 417.4138954945.

The spelling of 72727843 in words is "seventy-two million, seven hundred twenty-seven thousand, eight hundred forty-three".