66874744 has 8 divisors (see below), whose sum is σ = 125390160. Its totient is φ = 33437368.

The previous prime is 66874739. The next prime is 66874747. The reversal of 66874744 is 44747866.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 66874694 and 66874703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66874747) 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 as a sum of consecutive naturals, namely, 4179664 + ... + 4179679.

It is an arithmetic number, because the mean of its divisors is an integer number (15673770).

Almost surely, 2^66874744 is an apocalyptic number.

It is an amenable number.

66874744 is a deficient number, since it is larger than the sum of its proper divisors (58515416).

66874744 is a wasteful number, since it uses less digits than its factorization.

66874744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8359349 (or 8359345 counting only the distinct ones).

The product of its digits is 903168, while the sum is 46.

The square root of 66874744 is about 8177.6979645864. The cubic root of 66874744 is about 405.9015510282.

The spelling of 66874744 in words is "sixty-six million, eight hundred seventy-four thousand, seven hundred forty-four".