68943666 has 32 divisors (see below), whose sum is σ = 158342400. Its totient is φ = 19792080.

The previous prime is 68943661. The next prime is 68943697. The reversal of 68943666 is 66634986.

It is not an unprimeable number, because it can be changed into a prime (68943661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26236 + ... + 28743.

It is an arithmetic number, because the mean of its divisors is an integer number (4948200).

Almost surely, 2^68943666 is an apocalyptic number.

68943666 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

68943666 is an abundant number, since it is smaller than the sum of its proper divisors (89398734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68943666 is a wasteful number, since it uses less digits than its factorization.

68943666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55014.

The product of its digits is 1119744, while the sum is 48.

The square root of 68943666 is about 8303.2322621977. The cubic root of 68943666 is about 410.0449405428.

The spelling of 68943666 in words is "sixty-eight million, nine hundred forty-three thousand, six hundred sixty-six".