68402066 has 16 divisors (see below), whose sum is σ = 103707648. Its totient is φ = 33835200.

The previous prime is 68402057. The next prime is 68402077. The reversal of 68402066 is 66020486.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91691 + ... + 92433.

It is an arithmetic number, because the mean of its divisors is an integer number (6481728).

Almost surely, 2^68402066 is an apocalyptic number.

68402066 is a deficient number, since it is larger than the sum of its proper divisors (35305582).

68402066 is a wasteful number, since it uses less digits than its factorization.

68402066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 68402066 is about 8270.5541531387. The cubic root of 68402066 is about 408.9683880693.

The spelling of 68402066 in words is "sixty-eight million, four hundred two thousand, sixty-six".