67504720 has 80 divisors (see below), whose sum is σ = 167400000. Its totient is φ = 25242624.

The previous prime is 67504709. The next prime is 67504733. The reversal of 67504720 is 2740576.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135031 + ... + 135529.

It is an arithmetic number, because the mean of its divisors is an integer number (2092500).

Almost surely, 2^67504720 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 67504720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83700000).

67504720 is an abundant number, since it is smaller than the sum of its proper divisors (99895280).

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

67504720 is a wasteful number, since it uses less digits than its factorization.

67504720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 67504720 is about 8216.1256076085. The cubic root of 67504720 is about 407.1721326763.

The spelling of 67504720 in words is "sixty-seven million, five hundred four thousand, seven hundred twenty".