72985247 has 2 divisors, whose sum is σ = 72985248. Its totient is φ = 72985246.

The previous prime is 72985217. The next prime is 72985261. The reversal of 72985247 is 74258927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72985247 - 2⁸ = 72984991 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72985198 and 72985207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72985217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36492623 + 36492624.

It is an arithmetic number, because the mean of its divisors is an integer number (36492624).

Almost surely, 2^72985247 is an apocalyptic number.

72985247 is a deficient number, since it is larger than the sum of its proper divisors (1).

72985247 is an equidigital number, since it uses as much as digits as its factorization.

72985247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 44.

The square root of 72985247 is about 8543.1403476708. The cubic root of 72985247 is about 417.9057634988.

The spelling of 72985247 in words is "seventy-two million, nine hundred eighty-five thousand, two hundred forty-seven".