68247642 has 16 divisors (see below), whose sum is σ = 136712160. Its totient is φ = 22713072.

The previous prime is 68247629. The next prime is 68247649. The reversal of 68247642 is 24674286.

It is a self number, because there is not a number n which added to its sum of digits gives 68247642.

It is not an unprimeable number, because it can be changed into a prime (68247649) 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, 4792 + ... + 12627.

It is an arithmetic number, because the mean of its divisors is an integer number (8544510).

Almost surely, 2^68247642 is an apocalyptic number.

68247642 is an abundant number, since it is smaller than the sum of its proper divisors (68464518).

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

68247642 is a wasteful number, since it uses less digits than its factorization.

68247642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18077.

The product of its digits is 129024, while the sum is 39.

The square root of 68247642 is about 8261.2131070443. The cubic root of 68247642 is about 408.6603948391.

The spelling of 68247642 in words is "sixty-eight million, two hundred forty-seven thousand, six hundred forty-two".