72712771 has 2 divisors, whose sum is σ = 72712772. Its totient is φ = 72712770.

The previous prime is 72712751. The next prime is 72712781. The reversal of 72712771 is 17721727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72712771 - 2¹⁷ = 72581699 is a prime.

It is not a weakly prime, because it can be changed into another prime (72712741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36356385 + 36356386.

It is an arithmetic number, because the mean of its divisors is an integer number (36356386).

Almost surely, 2^72712771 is an apocalyptic number.

72712771 is a deficient number, since it is larger than the sum of its proper divisors (1).

72712771 is an equidigital number, since it uses as much as digits as its factorization.

72712771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9604, while the sum is 34.

The square root of 72712771 is about 8527.1783727092. The cubic root of 72712771 is about 417.3850587766.

The spelling of 72712771 in words is "seventy-two million, seven hundred twelve thousand, seven hundred seventy-one".