72063539 has 2 divisors, whose sum is σ = 72063540. Its totient is φ = 72063538.

The previous prime is 72063529. The next prime is 72063547. The reversal of 72063539 is 93536027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72063539 - 2⁸ = 72063283 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72063499 and 72063508.

It is not a weakly prime, because it can be changed into another prime (72063529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36031769 + 36031770.

It is an arithmetic number, because the mean of its divisors is an integer number (36031770).

Almost surely, 2^72063539 is an apocalyptic number.

72063539 is a deficient number, since it is larger than the sum of its proper divisors (1).

72063539 is an equidigital number, since it uses as much as digits as its factorization.

72063539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 72063539 is about 8489.0246200609. The cubic root of 72063539 is about 416.1391049685.

The spelling of 72063539 in words is "seventy-two million, sixty-three thousand, five hundred thirty-nine".