68729566 has 16 divisors (see below), whose sum is σ = 110081664. Its totient is φ = 32105304.

The previous prime is 68729539. The next prime is 68729567. The reversal of 68729566 is 66592786.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68729567) 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, 15396 + ... + 19351.

It is an arithmetic number, because the mean of its divisors is an integer number (6880104).

Almost surely, 2^68729566 is an apocalyptic number.

68729566 is a deficient number, since it is larger than the sum of its proper divisors (41352098).

68729566 is a wasteful number, since it uses less digits than its factorization.

68729566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34815.

The product of its digits is 1088640, while the sum is 49.

The square root of 68729566 is about 8290.3296677515. The cubic root of 68729566 is about 409.6200445856.

The spelling of 68729566 in words is "sixty-eight million, seven hundred twenty-nine thousand, five hundred sixty-six".