72658297 has 2 divisors, whose sum is σ = 72658298. Its totient is φ = 72658296.

The previous prime is 72658279. The next prime is 72658303. The reversal of 72658297 is 79285627.

Together with previous prime (72658279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66650896 + 6007401 = 8164^2 + 2451^2 .

It is an emirp because it is prime and its reverse (79285627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72658297 - 2⁷ = 72658169 is a prime.

It is not a weakly prime, because it can be changed into another prime (72658207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36329148 + 36329149.

It is an arithmetic number, because the mean of its divisors is an integer number (36329149).

Almost surely, 2^72658297 is an apocalyptic number.

It is an amenable number.

72658297 is a deficient number, since it is larger than the sum of its proper divisors (1).

72658297 is an equidigital number, since it uses as much as digits as its factorization.

72658297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 46.

The square root of 72658297 is about 8523.9836344282. The cubic root of 72658297 is about 417.2808023826.

The spelling of 72658297 in words is "seventy-two million, six hundred fifty-eight thousand, two hundred ninety-seven".