68250561 has 16 divisors (see below), whose sum is σ = 94187520. Its totient is φ = 43914960.

The previous prime is 68250487. The next prime is 68250571. The reversal of 68250561 is 16505286.

It is not a de Polignac number, because 68250561 - 2¹⁷ = 68119489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68250571) 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 15 ways as a sum of consecutive naturals, for example, 46050 + ... + 47508.

It is an arithmetic number, because the mean of its divisors is an integer number (5886720).

Almost surely, 2^68250561 is an apocalyptic number.

It is an amenable number.

68250561 is a deficient number, since it is larger than the sum of its proper divisors (25936959).

68250561 is a wasteful number, since it uses less digits than its factorization.

68250561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 68250561 is about 8261.3897741240. The cubic root of 68250561 is about 408.6662209875. Note that the first 3 decimals are identical.

The spelling of 68250561 in words is "sixty-eight million, two hundred fifty thousand, five hundred sixty-one".