72575663 has 2 divisors, whose sum is σ = 72575664. Its totient is φ = 72575662.

The previous prime is 72575627. The next prime is 72575677. The reversal of 72575663 is 36657527.

It is a strong prime.

It is an emirp because it is prime and its reverse (36657527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72575663 - 2¹² = 72571567 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72575663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72575263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36287831 + 36287832.

It is an arithmetic number, because the mean of its divisors is an integer number (36287832).

Almost surely, 2^72575663 is an apocalyptic number.

72575663 is a deficient number, since it is larger than the sum of its proper divisors (1).

72575663 is an equidigital number, since it uses as much as digits as its factorization.

72575663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 41.

The square root of 72575663 is about 8519.1351086833. The cubic root of 72575663 is about 417.1225517609.

The spelling of 72575663 in words is "seventy-two million, five hundred seventy-five thousand, six hundred sixty-three".