68250520 has 32 divisors (see below), whose sum is σ = 165377520. Its totient is φ = 25200000.

The previous prime is 68250487. The next prime is 68250571. The reversal of 68250520 is 2505286.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 65106 + ... + 66145.

Almost surely, 2^68250520 is an apocalyptic number.

It is an amenable number.

68250520 is an abundant number, since it is smaller than the sum of its proper divisors (97127000).

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

68250520 is a wasteful number, since it uses less digits than its factorization.

68250520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131275 (or 131271 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 68250520 is about 8261.3872927009. The cubic root of 68250520 is about 408.6661391551. Note that the first 3 decimals are identical.

The spelling of 68250520 in words is "sixty-eight million, two hundred fifty thousand, five hundred twenty".