68287899 has 4 divisors (see below), whose sum is σ = 91050536. Its totient is φ = 45525264.

The previous prime is 68287889. The next prime is 68287927. The reversal of 68287899 is 99878286.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68287899 - 2¹⁷ = 68156827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68287819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11381314 + ... + 11381319.

It is an arithmetic number, because the mean of its divisors is an integer number (22762634).

Almost surely, 2^68287899 is an apocalyptic number.

68287899 is a deficient number, since it is larger than the sum of its proper divisors (22762637).

68287899 is a wasteful number, since it uses less digits than its factorization.

68287899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22762636.

The product of its digits is 3483648, while the sum is 57.

The square root of 68287899 is about 8263.6492544154. The cubic root of 68287899 is about 408.7407307421.

The spelling of 68287899 in words is "sixty-eight million, two hundred eighty-seven thousand, eight hundred ninety-nine".