68203590 has 192 divisors, whose sum is σ = 212357376. Its totient is φ = 13886208.

The previous prime is 68203573. The next prime is 68203591. The reversal of 68203590 is 9530286.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68203591) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 821689 + ... + 821771.

It is an arithmetic number, because the mean of its divisors is an integer number (1106028).

Almost surely, 2^68203590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68203590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106178688).

68203590 is an abundant number, since it is smaller than the sum of its proper divisors (144153786).

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

68203590 is a wasteful number, since it uses less digits than its factorization.

68203590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 68203590 is about 8258.5464822812. The cubic root of 68203590 is about 408.5724495176.

The spelling of 68203590 in words is "sixty-eight million, two hundred three thousand, five hundred ninety".