68190724 has 48 divisors (see below), whose sum is σ = 139890688. Its totient is φ = 28483488.

The previous prime is 68190721. The next prime is 68190737. The reversal of 68190724 is 42709186.

It is not an unprimeable number, because it can be changed into a prime (68190721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305677 + ... + 305899.

Almost surely, 2^68190724 is an apocalyptic number.

It is an amenable number.

68190724 is an abundant number, since it is smaller than the sum of its proper divisors (71699964).

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

68190724 is a wasteful number, since it uses less digits than its factorization.

68190724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 68190724 is about 8257.7674949105. The cubic root of 68190724 is about 408.5467567170.

The spelling of 68190724 in words is "sixty-eight million, one hundred ninety thousand, seven hundred twenty-four".