67682521 has 8 divisors (see below), whose sum is σ = 68465664. Its totient is φ = 66903840.

The previous prime is 67682519. The next prime is 67682551. The reversal of 67682521 is 12528676.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67682521 - 2¹ = 67682519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67682551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36216 + ... + 38038.

It is an arithmetic number, because the mean of its divisors is an integer number (8558208).

Almost surely, 2^67682521 is an apocalyptic number.

It is an amenable number.

67682521 is a deficient number, since it is larger than the sum of its proper divisors (783143).

67682521 is a wasteful number, since it uses less digits than its factorization.

67682521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231.

The product of its digits is 40320, while the sum is 37.

The square root of 67682521 is about 8226.9387380726. The cubic root of 67682521 is about 407.5293034744.

The spelling of 67682521 in words is "sixty-seven million, six hundred eighty-two thousand, five hundred twenty-one".