67385520 has 100 divisors (see below), whose sum is σ = 234062400. Its totient is φ = 17967744.

The previous prime is 67385503. The next prime is 67385543. The reversal of 67385520 is 2558376.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1281 + ... + 11679.

It is an arithmetic number, because the mean of its divisors is an integer number (2340624).

Almost surely, 2^67385520 is an apocalyptic number.

67385520 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 67385520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117031200).

67385520 is an abundant number, since it is smaller than the sum of its proper divisors (166676880).

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

67385520 is a wasteful number, since it uses less digits than its factorization.

67385520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10424 (or 10409 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 67385520 is about 8208.8683751172. The cubic root of 67385520 is about 406.9323296227.

The spelling of 67385520 in words is "sixty-seven million, three hundred eighty-five thousand, five hundred twenty".