67718980 has 72 divisors (see below), whose sum is σ = 169380288. Its totient is φ = 22663872.

The previous prime is 67718971. The next prime is 67718999. The reversal of 67718980 is 8981776.

It is a self number, because there is not a number n which added to its sum of digits gives 67718980.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41337 + ... + 42943.

It is an arithmetic number, because the mean of its divisors is an integer number (2352504).

Almost surely, 2^67718980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67718980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84690144).

67718980 is an abundant number, since it is smaller than the sum of its proper divisors (101661308).

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

67718980 is a wasteful number, since it uses less digits than its factorization.

67718980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673 (or 1664 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 67718980 is about 8229.1542700329. The cubic root of 67718980 is about 407.6024658584.

It can be divided in two parts, 6771 and 8980, that added together give a palindrome (15751).

The spelling of 67718980 in words is "sixty-seven million, seven hundred eighteen thousand, nine hundred eighty".