68521528 has 16 divisors (see below), whose sum is σ = 128624760. Its totient is φ = 34221600.

The previous prime is 68521517. The next prime is 68521529. The reversal of 68521528 is 82512586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68521529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3358 + ... + 12178.

Almost surely, 2^68521528 is an apocalyptic number.

It is an amenable number.

68521528 is a deficient number, since it is larger than the sum of its proper divisors (60103232).

68521528 is a wasteful number, since it uses less digits than its factorization.

68521528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9798 (or 9794 counting only the distinct ones).

The product of its digits is 38400, while the sum is 37.

The square root of 68521528 is about 8277.7731304983. The cubic root of 68521528 is about 409.2063329643.

The spelling of 68521528 in words is "sixty-eight million, five hundred twenty-one thousand, five hundred twenty-eight".