68933340 has 72 divisors (see below), whose sum is σ = 238973280. Its totient is φ = 15755904.

The previous prime is 68933339. The next prime is 68933383. The reversal of 68933340 is 4333986.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 68933295 and 68933304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26095 + ... + 28614.

Almost surely, 2^68933340 is an apocalyptic number.

68933340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68933340 is an abundant number, since it is smaller than the sum of its proper divisors (170039940).

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

68933340 is a wasteful number, since it uses less digits than its factorization.

68933340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54731 (or 54726 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 68933340 is about 8302.6104328699. The cubic root of 68933340 is about 410.0244681015.

The spelling of 68933340 in words is "sixty-eight million, nine hundred thirty-three thousand, three hundred forty".