66984744 has 16 divisors (see below), whose sum is σ = 167461920. Its totient is φ = 22328240.

The previous prime is 66984721. The next prime is 66984761. The reversal of 66984744 is 44748966.

It is a junction number, because it is equal to n+sod(n) for n = 66984693 and 66984702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395492 + ... + 1395539.

It is an arithmetic number, because the mean of its divisors is an integer number (10466370).

Almost surely, 2^66984744 is an apocalyptic number.

It is an amenable number.

66984744 is an abundant number, since it is smaller than the sum of its proper divisors (100477176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66984744 is a wasteful number, since it uses less digits than its factorization.

66984744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791040 (or 2791036 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 66984744 is about 8184.4208102956. The cubic root of 66984744 is about 406.1239803523.

The spelling of 66984744 in words is "sixty-six million, nine hundred eighty-four thousand, seven hundred forty-four".