72608449 has 2 divisors, whose sum is σ = 72608450. Its totient is φ = 72608448.

The previous prime is 72608429. The next prime is 72608507. The reversal of 72608449 is 94480627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69422224 + 3186225 = 8332^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 72608449 - 2¹³ = 72600257 is a prime.

It is not a weakly prime, because it can be changed into another prime (72608429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36304224 + 36304225.

It is an arithmetic number, because the mean of its divisors is an integer number (36304225).

Almost surely, 2^72608449 is an apocalyptic number.

It is an amenable number.

72608449 is a deficient number, since it is larger than the sum of its proper divisors (1).

72608449 is an equidigital number, since it uses as much as digits as its factorization.

72608449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 72608449 is about 8521.0591477820. The cubic root of 72608449 is about 417.1853539024.

The spelling of 72608449 in words is "seventy-two million, six hundred eight thousand, four hundred forty-nine".