66044737 has 4 divisors (see below), whose sum is σ = 72048816. Its totient is φ = 60040660.

The previous prime is 66044723. The next prime is 66044747. The reversal of 66044737 is 73744066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66044737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66044696 and 66044705.

It is not an unprimeable number, because it can be changed into a prime (66044747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3002023 + ... + 3002044.

It is an arithmetic number, because the mean of its divisors is an integer number (18012204).

Almost surely, 2^66044737 is an apocalyptic number.

It is an amenable number.

66044737 is a deficient number, since it is larger than the sum of its proper divisors (6004079).

66044737 is a wasteful number, since it uses less digits than its factorization.

66044737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6004078.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 66044737 is about 8126.7913102282. The cubic root of 66044737 is about 404.2152910122.

The spelling of 66044737 in words is "sixty-six million, forty-four thousand, seven hundred thirty-seven".