68881724 has 6 divisors (see below), whose sum is σ = 120543024. Its totient is φ = 34440860.

The previous prime is 68881723. The next prime is 68881751. The reversal of 68881724 is 42718886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68881723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8610212 + ... + 8610219.

It is an arithmetic number, because the mean of its divisors is an integer number (20090504).

Almost surely, 2^68881724 is an apocalyptic number.

It is an amenable number.

68881724 is a deficient number, since it is larger than the sum of its proper divisors (51661300).

68881724 is a wasteful number, since it uses less digits than its factorization.

68881724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17220435 (or 17220433 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 68881724 is about 8299.5014308090. The cubic root of 68881724 is about 409.9221029881.

The spelling of 68881724 in words is "sixty-eight million, eight hundred eighty-one thousand, seven hundred twenty-four".