68213580 has 48 divisors (see below), whose sum is σ = 192707424. Its totient is φ = 18027520.

The previous prime is 68213569. The next prime is 68213581. The reversal of 68213580 is 8531286.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68213581) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1750 + ... + 11810.

It is an arithmetic number, because the mean of its divisors is an integer number (4014738).

Almost surely, 2^68213580 is an apocalyptic number.

68213580 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 68213580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96353712).

68213580 is an abundant number, since it is smaller than the sum of its proper divisors (124493844).

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

68213580 is a wasteful number, since it uses less digits than its factorization.

68213580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10186 (or 10184 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 68213580 is about 8259.1512881167. The cubic root of 68213580 is about 408.5923968523.

It can be divided in two parts, 6821 and 3580, that added together give a palindrome (10401).

The spelling of 68213580 in words is "sixty-eight million, two hundred thirteen thousand, five hundred eighty".