68115699 has 12 divisors (see below), whose sum is σ = 99099000. Its totient is φ = 45082944.

The previous prime is 68115689. The next prime is 68115709. The reversal of 68115699 is 99651186.

68115699 is a `hidden beast` number, since 6 + 81 + 1 + 569 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (68115689) and next prime (68115709).

It is not a de Polignac number, because 68115699 - 2⁵ = 68115667 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68115659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25974 + ... + 28475.

It is an arithmetic number, because the mean of its divisors is an integer number (8258250).

Almost surely, 2^68115699 is an apocalyptic number.

68115699 is a deficient number, since it is larger than the sum of its proper divisors (30983301).

68115699 is a wasteful number, since it uses less digits than its factorization.

68115699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54594 (or 54591 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 68115699 is about 8253.2235520432. The cubic root of 68115699 is about 408.3968708941.

The spelling of 68115699 in words is "sixty-eight million, one hundred fifteen thousand, six hundred ninety-nine".