68099790 has 128 divisors (see below), whose sum is σ = 192844800. Its totient is φ = 15206400.

The previous prime is 68099767. The next prime is 68099797. The reversal of 68099790 is 9799086.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68099797) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 342111 + ... + 342309.

It is an arithmetic number, because the mean of its divisors is an integer number (1506600).

Almost surely, 2^68099790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68099790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96422400).

68099790 is an abundant number, since it is smaller than the sum of its proper divisors (124745010).

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

68099790 is a wasteful number, since it uses less digits than its factorization.

68099790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 68099790 is about 8252.2596905333. The cubic root of 68099790 is about 408.3650735659.

The spelling of 68099790 in words is "sixty-eight million, ninety-nine thousand, seven hundred ninety".