72776727 has 12 divisors (see below), whose sum is σ = 107359200. Its totient is φ = 47485248.

The previous prime is 72776701. The next prime is 72776731. The reversal of 72776727 is 72767727.

It is not a de Polignac number, because 72776727 - 2¹¹ = 72774679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72776777) 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, 85602 + ... + 86447.

It is an arithmetic number, because the mean of its divisors is an integer number (8946600).

Almost surely, 2^72776727 is an apocalyptic number.

72776727 is a deficient number, since it is larger than the sum of its proper divisors (34582473).

72776727 is a wasteful number, since it uses less digits than its factorization.

72776727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172102 (or 172099 counting only the distinct ones).

The product of its digits is 403368, while the sum is 45.

The square root of 72776727 is about 8530.9276752297. The cubic root of 72776727 is about 417.5073960945.

The spelling of 72776727 in words is "seventy-two million, seven hundred seventy-six thousand, seven hundred twenty-seven".