68309892 has 60 divisors (see below), whose sum is σ = 204093120. Its totient is φ = 19516464.

The previous prime is 68309887. The next prime is 68309897. The reversal of 68309892 is 29890386.

It is an interprime number because it is at equal distance from previous prime (68309887) and next prime (68309897).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68309897) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12792 + ... + 17327.

It is an arithmetic number, because the mean of its divisors is an integer number (3401552).

Almost surely, 2^68309892 is an apocalyptic number.

It is an amenable number.

68309892 is an abundant number, since it is smaller than the sum of its proper divisors (135783228).

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

68309892 is a wasteful number, since it uses less digits than its factorization.

68309892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30142 (or 30131 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 68309892 is about 8264.9798547849. The cubic root of 68309892 is about 408.7846061097.

The spelling of 68309892 in words is "sixty-eight million, three hundred nine thousand, eight hundred ninety-two".