72666711 has 12 divisors (see below), whose sum is σ = 113037288. Its totient is φ = 44717904.

The previous prime is 72666709. The next prime is 72666739. The reversal of 72666711 is 11766627.

It is not a de Polignac number, because 72666711 - 2¹ = 72666709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72666761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310425 + ... + 310658.

It is an arithmetic number, because the mean of its divisors is an integer number (9419774).

Almost surely, 2^72666711 is an apocalyptic number.

72666711 is a deficient number, since it is larger than the sum of its proper divisors (40370577).

72666711 is a wasteful number, since it uses less digits than its factorization.

72666711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621102 (or 621099 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 72666711 is about 8524.4771687183. The cubic root of 72666711 is about 417.2969091238.

The spelling of 72666711 in words is "seventy-two million, six hundred sixty-six thousand, seven hundred eleven".