68193090 has 192 divisors, whose sum is σ = 222243840. Its totient is φ = 14696640.

The previous prime is 68193061. The next prime is 68193101. The reversal of 68193090 is 9039186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 323085 + ... + 323295.

It is an arithmetic number, because the mean of its divisors is an integer number (1157520).

Almost surely, 2^68193090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68193090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111121920).

68193090 is an abundant number, since it is smaller than the sum of its proper divisors (154050750).

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

68193090 is a wasteful number, since it uses less digits than its factorization.

68193090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 68193090 is about 8257.9107527267. The cubic root of 68193090 is about 408.5514817509.

The spelling of 68193090 in words is "sixty-eight million, one hundred ninety-three thousand, ninety".