68504521 has 8 divisors (see below), whose sum is σ = 70479360. Its totient is φ = 66551328.

The previous prime is 68504507. The next prime is 68504551. The reversal of 68504521 is 12540586.

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 68504521 - 2⁵ = 68504489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68504551) 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, 1120 + ... + 11758.

It is an arithmetic number, because the mean of its divisors is an integer number (8809920).

Almost surely, 2^68504521 is an apocalyptic number.

It is an amenable number.

68504521 is a deficient number, since it is larger than the sum of its proper divisors (1974839).

68504521 is a wasteful number, since it uses less digits than its factorization.

68504521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10823.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 68504521 is about 8276.7457977154. The cubic root of 68504521 is about 409.1724752451.

The spelling of 68504521 in words is "sixty-eight million, five hundred four thousand, five hundred twenty-one".