68338740 has 24 divisors (see below), whose sum is σ = 191348640. Its totient is φ = 18223648.

The previous prime is 68338733. The next prime is 68338757. The reversal of 68338740 is 4783386.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569430 + ... + 569549.

It is an arithmetic number, because the mean of its divisors is an integer number (7972860).

Almost surely, 2^68338740 is an apocalyptic number.

68338740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68338740 is an abundant number, since it is smaller than the sum of its proper divisors (123009900).

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

68338740 is a wasteful number, since it uses less digits than its factorization.

68338740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138991 (or 1138989 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 68338740 is about 8266.7248653865. The cubic root of 68338740 is about 408.8421427188.

The spelling of 68338740 in words is "sixty-eight million, three hundred thirty-eight thousand, seven hundred forty".