68540589 has 24 divisors (see below), whose sum is σ = 106928640. Its totient is φ = 42056352.

The previous prime is 68540579. The next prime is 68540599. The reversal of 68540589 is 98504586.

68540589 is a `hidden beast` number, since 68 + 5 + 4 + 0 + 589 = 666.

It is an interprime number because it is at equal distance from previous prime (68540579) and next prime (68540599).

It is not a de Polignac number, because 68540589 - 2⁴ = 68540573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68540569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55432 + ... + 56654.

It is an arithmetic number, because the mean of its divisors is an integer number (4455360).

Almost surely, 2^68540589 is an apocalyptic number.

It is an amenable number.

68540589 is a deficient number, since it is larger than the sum of its proper divisors (38388051).

68540589 is a wasteful number, since it uses less digits than its factorization.

68540589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 68540589 is about 8278.9243866580. The cubic root of 68540589 is about 409.2442731514.

The spelling of 68540589 in words is "sixty-eight million, five hundred forty thousand, five hundred eighty-nine".