68140744 has 16 divisors (see below), whose sum is σ = 146016000. Its totient is φ = 29203152.

The previous prime is 68140711. The next prime is 68140747. The reversal of 68140744 is 44704186.

It is a super-3 number, since 3×68140744³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (68140747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608344 + ... + 608455.

It is an arithmetic number, because the mean of its divisors is an integer number (9126000).

Almost surely, 2^68140744 is an apocalyptic number.

It is an amenable number.

68140744 is an abundant number, since it is smaller than the sum of its proper divisors (77875256).

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

68140744 is a wasteful number, since it uses less digits than its factorization.

68140744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216812 (or 1216808 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 68140744 is about 8254.7406985320. The cubic root of 68140744 is about 408.4469183205.

The spelling of 68140744 in words is "sixty-eight million, one hundred forty thousand, seven hundred forty-four".