68993892 has 72 divisors (see below), whose sum is σ = 193546080. Its totient is φ = 20545920.

The previous prime is 68993861. The next prime is 68993909. The reversal of 68993892 is 29839986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21888 + ... + 24840.

It is an arithmetic number, because the mean of its divisors is an integer number (2688140).

Almost surely, 2^68993892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68993892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96773040).

68993892 is an abundant number, since it is smaller than the sum of its proper divisors (124552188).

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

68993892 is a wasteful number, since it uses less digits than its factorization.

68993892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033 (or 3028 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 68993892 is about 8306.2561963860. The cubic root of 68993892 is about 410.1444900215.

The spelling of 68993892 in words is "sixty-eight million, nine hundred ninety-three thousand, eight hundred ninety-two".