66754542 has 8 divisors (see below), whose sum is σ = 133509096. Its totient is φ = 22251512.

The previous prime is 66754537. The next prime is 66754559. The reversal of 66754542 is 24545766.

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

66754542 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 66754542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5562873 + ... + 5562884.

It is an arithmetic number, because the mean of its divisors is an integer number (16688637).

Almost surely, 2^66754542 is an apocalyptic number.

66754542 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.

66754542 is a wasteful number, since it uses less digits than its factorization.

66754542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11125762.

The product of its digits is 201600, while the sum is 39.

The square root of 66754542 is about 8170.3452803416. The cubic root of 66754542 is about 405.6582133261.

The spelling of 66754542 in words is "sixty-six million, seven hundred fifty-four thousand, five hundred forty-two".