72707563 has 2 divisors, whose sum is σ = 72707564. Its totient is φ = 72707562.

The previous prime is 72707549. The next prime is 72707567. The reversal of 72707563 is 36570727.

It is a strong prime.

It is an emirp because it is prime and its reverse (36570727) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72707563 is a prime.

It is not a weakly prime, because it can be changed into another prime (72707567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36353781 + 36353782.

It is an arithmetic number, because the mean of its divisors is an integer number (36353782).

Almost surely, 2^72707563 is an apocalyptic number.

72707563 is a deficient number, since it is larger than the sum of its proper divisors (1).

72707563 is an equidigital number, since it uses as much as digits as its factorization.

72707563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 72707563 is about 8526.8729907276. The cubic root of 72707563 is about 417.3750935703.

The spelling of 72707563 in words is "seventy-two million, seven hundred seven thousand, five hundred sixty-three".