72774575 has 12 divisors (see below), whose sum is σ = 90511320. Its totient is φ = 58044960.

The previous prime is 72774571. The next prime is 72774587. The reversal of 72774575 is 57547727.

It is not a de Polignac number, because 72774575 - 2² = 72774571 is a prime.

It is a super-2 number, since 2×72774575² = 10592277532861250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72774571) 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, 4481 + ... + 12869.

It is an arithmetic number, because the mean of its divisors is an integer number (7542610).

Almost surely, 2^72774575 is an apocalyptic number.

72774575 is a deficient number, since it is larger than the sum of its proper divisors (17736745).

72774575 is a wasteful number, since it uses less digits than its factorization.

72774575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8746 (or 8741 counting only the distinct ones).

The product of its digits is 480200, while the sum is 44.

The square root of 72774575 is about 8530.8015449898. The cubic root of 72774575 is about 417.5032808376.

The spelling of 72774575 in words is "seventy-two million, seven hundred seventy-four thousand, five hundred seventy-five".