66446042 has 8 divisors (see below), whose sum is σ = 107335956. Its totient is φ = 30667392.

The previous prime is 66446033. The next prime is 66446069. The reversal of 66446042 is 24064466.

It can be written as a sum of positive squares in 2 ways, for example, as 65788321 + 657721 = 8111^2 + 811^2 .

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277783 + ... + 1277834.

Almost surely, 2^66446042 is an apocalyptic number.

66446042 is a deficient number, since it is larger than the sum of its proper divisors (40889914).

66446042 is a wasteful number, since it uses less digits than its factorization.

66446042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555632.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 66446042 is about 8151.4441665266. Note that the first 3 decimals coincide. The cubic root of 66446042 is about 405.0323441120.

The spelling of 66446042 in words is "sixty-six million, four hundred forty-six thousand, forty-two".