72741601 has 2 divisors, whose sum is σ = 72741602. Its totient is φ = 72741600.

The previous prime is 72741577. The next prime is 72741637. The reversal of 72741601 is 10614727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55890576 + 16851025 = 7476^2 + 4105^2 .

It is an emirp because it is prime and its reverse (10614727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72741601 - 2⁹ = 72741089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72741601.

It is not a weakly prime, because it can be changed into another prime (72741661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36370800 + 36370801.

It is an arithmetic number, because the mean of its divisors is an integer number (36370801).

Almost surely, 2^72741601 is an apocalyptic number.

It is an amenable number.

72741601 is a deficient number, since it is larger than the sum of its proper divisors (1).

72741601 is an equidigital number, since it uses as much as digits as its factorization.

72741601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 72741601 is about 8528.8686823048. The cubic root of 72741601 is about 417.4402147053.

The spelling of 72741601 in words is "seventy-two million, seven hundred forty-one thousand, six hundred one".