68889199 has 8 divisors (see below), whose sum is σ = 70566320. Its totient is φ = 67231296.

The previous prime is 68889187. The next prime is 68889211. The reversal of 68889199 is 99198886.

It is an interprime number because it is at equal distance from previous prime (68889187) and next prime (68889211).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68889199 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 (68829199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2587 + ... + 12019.

It is an arithmetic number, because the mean of its divisors is an integer number (8820790).

Almost surely, 2^68889199 is an apocalyptic number.

68889199 is a deficient number, since it is larger than the sum of its proper divisors (1677121).

68889199 is a wasteful number, since it uses less digits than its factorization.

68889199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609.

The product of its digits is 2239488, while the sum is 58.

The square root of 68889199 is about 8299.9517468477. The cubic root of 68889199 is about 409.9369306120.

The spelling of 68889199 in words is "sixty-eight million, eight hundred eighty-nine thousand, one hundred ninety-nine".