66740546 has 8 divisors (see below), whose sum is σ = 100427580. Its totient is φ = 33264688.

The previous prime is 66740539. The next prime is 66740567. The reversal of 66740546 is 64504766.

66740546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 51051025 + 15689521 = 7145^2 + 3961^2 .

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

It is an unprimeable number.

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, 52001 + ... + 53268.

Almost surely, 2^66740546 is an apocalyptic number.

66740546 is a deficient number, since it is larger than the sum of its proper divisors (33687034).

66740546 is a wasteful number, since it uses less digits than its factorization.

66740546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105588.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 66740546 is about 8169.4887232923. The cubic root of 66740546 is about 405.6298607525.

The spelling of 66740546 in words is "sixty-six million, seven hundred forty thousand, five hundred forty-six".