68999745 has 8 divisors (see below), whose sum is σ = 110399616. Its totient is φ = 36799856.

The previous prime is 68999741. The next prime is 68999767. The reversal of 68999745 is 54799986.

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 68999745 - 2² = 68999741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68999741) 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, 2299977 + ... + 2300006.

It is an arithmetic number, because the mean of its divisors is an integer number (13799952).

Almost surely, 2^68999745 is an apocalyptic number.

It is an amenable number.

68999745 is a deficient number, since it is larger than the sum of its proper divisors (41399871).

68999745 is a wasteful number, since it uses less digits than its factorization.

68999745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599991.

The product of its digits is 4898880, while the sum is 57.

The square root of 68999745 is about 8306.6085137076. The cubic root of 68999745 is about 410.1560877042.

The spelling of 68999745 in words is "sixty-eight million, nine hundred ninety-nine thousand, seven hundred forty-five".