68191950 has 96 divisors (see below), whose sum is σ = 181059840. Its totient is φ = 16934400.

The previous prime is 68191901. The next prime is 68191951. The reversal of 68191950 is 5919186.

It is a junction number, because it is equal to n+sod(n) for n = 68191899 and 68191908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68191951) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 202182 + ... + 202518.

It is an arithmetic number, because the mean of its divisors is an integer number (1886040).

Almost surely, 2^68191950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68191950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90529920).

68191950 is an abundant number, since it is smaller than the sum of its proper divisors (112867890).

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

68191950 is a wasteful number, since it uses less digits than its factorization.

68191950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 68191950 is about 8257.8417277155. The cubic root of 68191950 is about 408.5492051210.

The spelling of 68191950 in words is "sixty-eight million, one hundred ninety-one thousand, nine hundred fifty".