68867999 has 4 divisors (see below), whose sum is σ = 68892936. Its totient is φ = 68843064.

The previous prime is 68867959. The next prime is 68868001. The reversal of 68867999 is 99976886.

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

It is a cyclic number.

It is not a de Polignac number, because 68867999 - 2¹² = 68863903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68867959) 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, 7724 + ... + 14049.

It is an arithmetic number, because the mean of its divisors is an integer number (17223234).

Almost surely, 2^68867999 is an apocalyptic number.

68867999 is a deficient number, since it is larger than the sum of its proper divisors (24937).

68867999 is a wasteful number, since it uses less digits than its factorization.

68867999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24936.

The product of its digits is 11757312, while the sum is 62.

The square root of 68867999 is about 8298.6745327191. The cubic root of 68867999 is about 409.8948748921.

The spelling of 68867999 in words is "sixty-eight million, eight hundred sixty-seven thousand, nine hundred ninety-nine".