72680353 has 2 divisors, whose sum is σ = 72680354. Its totient is φ = 72680352.

The previous prime is 72680329. The next prime is 72680407. The reversal of 72680353 is 35308627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63728289 + 8952064 = 7983^2 + 2992^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72680353 is a prime.

It is not a weakly prime, because it can be changed into another prime (72680323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36340176 + 36340177.

It is an arithmetic number, because the mean of its divisors is an integer number (36340177).

Almost surely, 2^72680353 is an apocalyptic number.

It is an amenable number.

72680353 is a deficient number, since it is larger than the sum of its proper divisors (1).

72680353 is an equidigital number, since it uses as much as digits as its factorization.

72680353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 72680353 is about 8525.2772975429. The cubic root of 72680353 is about 417.3230210722.

The spelling of 72680353 in words is "seventy-two million, six hundred eighty thousand, three hundred fifty-three".