68140618 has 16 divisors (see below), whose sum is σ = 125798400. Its totient is φ = 26956656.

The previous prime is 68140601. The next prime is 68140619. The reversal of 68140618 is 81604186.

It is not an unprimeable number, because it can be changed into a prime (68140619) 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, 187018 + ... + 187381.

It is an arithmetic number, because the mean of its divisors is an integer number (7862400).

Almost surely, 2^68140618 is an apocalyptic number.

68140618 is a deficient number, since it is larger than the sum of its proper divisors (57657782).

68140618 is a wasteful number, since it uses less digits than its factorization.

68140618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374421.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 68140618 is about 8254.7330665504. The cubic root of 68140618 is about 408.4466665653.

The spelling of 68140618 in words is "sixty-eight million, one hundred forty thousand, six hundred eighteen".