67481580 has 48 divisors (see below), whose sum is σ = 191086560. Its totient is φ = 17791488.

The previous prime is 67481549. The next prime is 67481627. The reversal of 67481580 is 8518476.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 979 + ... + 11658.

It is an arithmetic number, because the mean of its divisors is an integer number (3980970).

Almost surely, 2^67481580 is an apocalyptic number.

67481580 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 67481580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95543280).

67481580 is an abundant number, since it is smaller than the sum of its proper divisors (123604980).

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

67481580 is a wasteful number, since it uses less digits than its factorization.

67481580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12738 (or 12736 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 67481580 is about 8214.7172805885. The cubic root of 67481580 is about 407.1256023994.

The spelling of 67481580 in words is "sixty-seven million, four hundred eighty-one thousand, five hundred eighty".