68389340 has 12 divisors (see below), whose sum is σ = 143617656. Its totient is φ = 27355728.

The previous prime is 68389333. The next prime is 68389367. The reversal of 68389340 is 4398386.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1709714 + ... + 1709753.

It is an arithmetic number, because the mean of its divisors is an integer number (11968138).

Almost surely, 2^68389340 is an apocalyptic number.

It is an amenable number.

68389340 is an abundant number, since it is smaller than the sum of its proper divisors (75228316).

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

68389340 is a wasteful number, since it uses less digits than its factorization.

68389340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419476 (or 3419474 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 68389340 is about 8269.7847614070. The cubic root of 68389340 is about 408.9430240474.

The spelling of 68389340 in words is "sixty-eight million, three hundred eighty-nine thousand, three hundred forty".