67685980 has 48 divisors (see below), whose sum is σ = 152208000. Its totient is φ = 25206336.

The previous prime is 67685977. The next prime is 67686019. The reversal of 67685980 is 8958676.

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 15 ways as a sum of consecutive naturals, for example, 20911 + ... + 23929.

It is an arithmetic number, because the mean of its divisors is an integer number (3171000).

Almost surely, 2^67685980 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 67685980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76104000).

67685980 is an abundant number, since it is smaller than the sum of its proper divisors (84522020).

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

67685980 is a wasteful number, since it uses less digits than its factorization.

67685980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106 (or 3104 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 67685980 is about 8227.1489593905. The cubic root of 67685980 is about 407.5362457880.

The spelling of 67685980 in words is "sixty-seven million, six hundred eighty-five thousand, nine hundred eighty".