68537299 has 2 divisors, whose sum is σ = 68537300. Its totient is φ = 68537298.

The previous prime is 68537243. The next prime is 68537323. The reversal of 68537299 is 99273586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68537299 - 2¹⁷ = 68406227 is a prime.

It is a super-3 number, since 3×68537299³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (68534299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34268649 + 34268650.

It is an arithmetic number, because the mean of its divisors is an integer number (34268650).

Almost surely, 2^68537299 is an apocalyptic number.

68537299 is a deficient number, since it is larger than the sum of its proper divisors (1).

68537299 is an equidigital number, since it uses as much as digits as its factorization.

68537299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 68537299 is about 8278.7256869641. The cubic root of 68537299 is about 409.2377250353.

The spelling of 68537299 in words is "sixty-eight million, five hundred thirty-seven thousand, two hundred ninety-nine".