68840699 has 4 divisors (see below), whose sum is σ = 69614280. Its totient is φ = 68067120.

The previous prime is 68840689. The next prime is 68840711. The reversal of 68840699 is 99604886.

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 68840699 - 2²⁴ = 52063483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68840689) 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, 386657 + ... + 386834.

It is an arithmetic number, because the mean of its divisors is an integer number (17403570).

Almost surely, 2^68840699 is an apocalyptic number.

68840699 is a deficient number, since it is larger than the sum of its proper divisors (773581).

68840699 is an equidigital number, since it uses as much as digits as its factorization.

68840699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773580.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 68840699 is about 8297.0295286928. The cubic root of 68840699 is about 409.8407055188.

The spelling of 68840699 in words is "sixty-eight million, eight hundred forty thousand, six hundred ninety-nine".