72960997 has 2 divisors, whose sum is σ = 72960998. Its totient is φ = 72960996.

The previous prime is 72960971. The next prime is 72961001. The reversal of 72960997 is 79906927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72743841 + 217156 = 8529^2 + 466^2 .

It is a cyclic number.

It is not a de Polignac number, because 72960997 - 2⁷ = 72960869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72960997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72960907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36480498 + 36480499.

It is an arithmetic number, because the mean of its divisors is an integer number (36480499).

Almost surely, 2^72960997 is an apocalyptic number.

It is an amenable number.

72960997 is a deficient number, since it is larger than the sum of its proper divisors (1).

72960997 is an equidigital number, since it uses as much as digits as its factorization.

72960997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 72960997 is about 8541.7209624291. The cubic root of 72960997 is about 417.8594740645.

The spelling of 72960997 in words is "seventy-two million, nine hundred sixty thousand, nine hundred ninety-seven".