72494897 has 2 divisors, whose sum is σ = 72494898. Its totient is φ = 72494896.

The previous prime is 72494819. The next prime is 72494911. The reversal of 72494897 is 79849427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55815841 + 16679056 = 7471^2 + 4084^2 .

It is a cyclic number.

It is not a de Polignac number, because 72494897 - 2⁸ = 72494641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72494297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36247448 + 36247449.

It is an arithmetic number, because the mean of its divisors is an integer number (36247449).

Almost surely, 2^72494897 is an apocalyptic number.

It is an amenable number.

72494897 is a deficient number, since it is larger than the sum of its proper divisors (1).

72494897 is an equidigital number, since it uses as much as digits as its factorization.

72494897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 50.

The square root of 72494897 is about 8514.3935192120. The cubic root of 72494897 is about 416.9677623847.

The spelling of 72494897 in words is "seventy-two million, four hundred ninety-four thousand, eight hundred ninety-seven".