68143306 has 16 divisors (see below), whose sum is σ = 127437120. Its totient is φ = 26549280.

The previous prime is 68143277. The next prime is 68143321. The reversal of 68143306 is 60334186.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221091 + ... + 221398.

It is an arithmetic number, because the mean of its divisors is an integer number (7964820).

Almost surely, 2^68143306 is an apocalyptic number.

68143306 is a deficient number, since it is larger than the sum of its proper divisors (59293814).

68143306 is a wasteful number, since it uses less digits than its factorization.

68143306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442509.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 68143306 is about 8254.8958806274. The cubic root of 68143306 is about 408.4520372739.

The spelling of 68143306 in words is "sixty-eight million, one hundred forty-three thousand, three hundred six".