66670444 has 12 divisors (see below), whose sum is σ = 116846968. Its totient is φ = 33285600.

The previous prime is 66670441. The next prime is 66670453. The reversal of 66670444 is 44407666.

It is a super-3 number, since 3×66670444³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66670441) by changing a digit.

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, 9297 + ... + 14824.

Almost surely, 2^66670444 is an apocalyptic number.

It is an amenable number.

66670444 is a deficient number, since it is larger than the sum of its proper divisors (50176524).

66670444 is a wasteful number, since it uses less digits than its factorization.

66670444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24816 (or 24814 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 66670444 is about 8165.1971194822. The cubic root of 66670444 is about 405.4877910617.

The spelling of 66670444 in words is "sixty-six million, six hundred seventy thousand, four hundred forty-four".