72726163 has 2 divisors, whose sum is σ = 72726164. Its totient is φ = 72726162.

The previous prime is 72726149. The next prime is 72726179. The reversal of 72726163 is 36162727.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72726163 - 2⁹ = 72725651 is a prime.

It is not a weakly prime, because it can be changed into another prime (72726103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36363081 + 36363082.

It is an arithmetic number, because the mean of its divisors is an integer number (36363082).

Almost surely, 2^72726163 is an apocalyptic number.

72726163 is a deficient number, since it is larger than the sum of its proper divisors (1).

72726163 is an equidigital number, since it uses as much as digits as its factorization.

72726163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 72726163 is about 8527.9635904476. The cubic root of 72726163 is about 417.4106814080.

The spelling of 72726163 in words is "seventy-two million, seven hundred twenty-six thousand, one hundred sixty-three".