67313220 has 96 divisors (see below), whose sum is σ = 204435840. Its totient is φ = 16450560.

The previous prime is 67313201. The next prime is 67313231. The reversal of 67313220 is 2231376.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164376 + ... + 164784.

It is an arithmetic number, because the mean of its divisors is an integer number (2129540).

Almost surely, 2^67313220 is an apocalyptic number.

67313220 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 67313220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102217920).

67313220 is an abundant number, since it is smaller than the sum of its proper divisors (137122620).

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

67313220 is a wasteful number, since it uses less digits than its factorization.

67313220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 67313220 is about 8204.4634193834. The cubic root of 67313220 is about 406.7867407978.

Adding to 67313220 its reverse (2231376), we get a palindrome (69544596).

The spelling of 67313220 in words is "sixty-seven million, three hundred thirteen thousand, two hundred twenty".