68540574 has 8 divisors (see below), whose sum is σ = 137081160. Its totient is φ = 22846856.

The previous prime is 68540573. The next prime is 68540579. The reversal of 68540574 is 47504586.

It is a sphenic number, since it is the product of 3 distinct primes.

68540574 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68540573) 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 3 ways as a sum of consecutive naturals, for example, 5711709 + ... + 5711720.

It is an arithmetic number, because the mean of its divisors is an integer number (17135145).

Almost surely, 2^68540574 is an apocalyptic number.

68540574 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68540574 is a wasteful number, since it uses less digits than its factorization.

68540574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11423434.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 68540574 is about 8278.9234807431. The cubic root of 68540574 is about 409.2442432972.

The spelling of 68540574 in words is "sixty-eight million, five hundred forty thousand, five hundred seventy-four".