68723399 has 8 divisors (see below), whose sum is σ = 72561840. Its totient is φ = 64907136.

The previous prime is 68723357. The next prime is 68723411. The reversal of 68723399 is 99332786.

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

It is a cyclic number.

It is not a de Polignac number, because 68723399 - 2⁸ = 68723143 is a prime.

It is a super-2 number, since 2×68723399² = 9445811140226402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68723309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037 + ... + 11769.

It is an arithmetic number, because the mean of its divisors is an integer number (9070230).

Almost surely, 2^68723399 is an apocalyptic number.

68723399 is a deficient number, since it is larger than the sum of its proper divisors (3838441).

68723399 is a wasteful number, since it uses less digits than its factorization.

68723399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11089.

The product of its digits is 489888, while the sum is 47.

The square root of 68723399 is about 8289.9577200369. The cubic root of 68723399 is about 409.6077926902.

The spelling of 68723399 in words is "sixty-eight million, seven hundred twenty-three thousand, three hundred ninety-nine".