68536449 has 24 divisors (see below), whose sum is σ = 103495392. Its totient is φ = 45321120.

The previous prime is 68536411. The next prime is 68536463. The reversal of 68536449 is 94463586.

It is not a de Polignac number, because 68536449 - 2²¹ = 66439297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68536649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30757 + ... + 32909.

It is an arithmetic number, because the mean of its divisors is an integer number (4312308).

Almost surely, 2^68536449 is an apocalyptic number.

It is an amenable number.

68536449 is a deficient number, since it is larger than the sum of its proper divisors (34958943).

68536449 is a wasteful number, since it uses less digits than its factorization.

68536449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299 (or 2287 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 68536449 is about 8278.6743504018. The cubic root of 68536449 is about 409.2360332387.

The spelling of 68536449 in words is "sixty-eight million, five hundred thirty-six thousand, four hundred forty-nine".