68989950 has 72 divisors (see below), whose sum is σ = 195132600. Its totient is φ = 17426880.

The previous prime is 68989909. The next prime is 68989951. The reversal of 68989950 is 5998986.

It is a super-2 number, since 2×68989950² = 9519226402005000, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68989951) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4516 + ... + 12584.

It is an arithmetic number, because the mean of its divisors is an integer number (2710175).

Almost surely, 2^68989950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68989950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97566300).

68989950 is an abundant number, since it is smaller than the sum of its proper divisors (126142650).

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

68989950 is a wasteful number, since it uses less digits than its factorization.

68989950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8106 (or 8098 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The square root of 68989950 is about 8306.0189019770. The cubic root of 68989950 is about 410.1366786035.

The spelling of 68989950 in words is "sixty-eight million, nine hundred eighty-nine thousand, nine hundred fifty".