68536899 has 6 divisors (see below), whose sum is σ = 98997756. Its totient is φ = 45691260.

The previous prime is 68536879. The next prime is 68536957. The reversal of 68536899 is 99863586.

It is a de Polignac number, because none of the positive numbers 2^k-68536899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68536859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3807597 + ... + 3807614.

It is an arithmetic number, because the mean of its divisors is an integer number (16499626).

Almost surely, 2^68536899 is an apocalyptic number.

68536899 is a deficient number, since it is larger than the sum of its proper divisors (30460857).

68536899 is a wasteful number, since it uses less digits than its factorization.

68536899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7615217 (or 7615214 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 68536899 is about 8278.7015286215. The cubic root of 68536899 is about 409.2369288975.

The spelling of 68536899 in words is "sixty-eight million, five hundred thirty-six thousand, eight hundred ninety-nine".