72736497 has 6 divisors (see below), whose sum is σ = 105063842. Its totient is φ = 48490992.

The previous prime is 72736483. The next prime is 72736507. The reversal of 72736497 is 79463727.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 67914081 + 4822416 = 8241^2 + 2196^2 .

It is not a de Polignac number, because 72736497 - 2⁴ = 72736481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72736457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4040908 + ... + 4040925.

Almost surely, 2^72736497 is an apocalyptic number.

It is an amenable number.

72736497 is a deficient number, since it is larger than the sum of its proper divisors (32327345).

72736497 is a wasteful number, since it uses less digits than its factorization.

72736497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8081839 (or 8081836 counting only the distinct ones).

The product of its digits is 444528, while the sum is 45.

The square root of 72736497 is about 8528.5694580041. The cubic root of 72736497 is about 417.4304510824.

The spelling of 72736497 in words is "seventy-two million, seven hundred thirty-six thousand, four hundred ninety-seven".