72966559 has 2 divisors, whose sum is σ = 72966560. Its totient is φ = 72966558.

The previous prime is 72966547. The next prime is 72966563. The reversal of 72966559 is 95566927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72966559 - 2¹³ = 72958367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72966589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36483279 + 36483280.

It is an arithmetic number, because the mean of its divisors is an integer number (36483280).

Almost surely, 2^72966559 is an apocalyptic number.

72966559 is a deficient number, since it is larger than the sum of its proper divisors (1).

72966559 is an equidigital number, since it uses as much as digits as its factorization.

72966559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1020600, while the sum is 49.

The square root of 72966559 is about 8542.0465346426. The cubic root of 72966559 is about 417.8700919537.

The spelling of 72966559 in words is "seventy-two million, nine hundred sixty-six thousand, five hundred fifty-nine".