68099220 has 144 divisors (see below), whose sum is σ = 241113600. Its totient is φ = 15551424.

The previous prime is 68099197. The next prime is 68099231. The reversal of 68099220 is 2299086.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61189 + ... + 62291.

It is an arithmetic number, because the mean of its divisors is an integer number (1674400).

Almost surely, 2^68099220 is an apocalyptic number.

68099220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68099220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120556800).

68099220 is an abundant number, since it is smaller than the sum of its proper divisors (173014380).

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

68099220 is a wasteful number, since it uses less digits than its factorization.

68099220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 68099220 is about 8252.2251544659. The cubic root of 68099220 is about 408.3639342146.

The spelling of 68099220 in words is "sixty-eight million, ninety-nine thousand, two hundred twenty".