66937441 has 4 divisors (see below), whose sum is σ = 67338432. Its totient is φ = 66536452.

The previous prime is 66937439. The next prime is 66937457. The reversal of 66937441 is 14473966.

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 not a de Polignac number, because 66937441 - 2¹ = 66937439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66937394 and 66937403.

It is not an unprimeable number, because it can be changed into a prime (66937841) 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, 200245 + ... + 200578.

It is an arithmetic number, because the mean of its divisors is an integer number (16834608).

Almost surely, 2^66937441 is an apocalyptic number.

It is an amenable number.

66937441 is a deficient number, since it is larger than the sum of its proper divisors (400991).

66937441 is a wasteful number, since it uses less digits than its factorization.

66937441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400990.

The product of its digits is 108864, while the sum is 40.

The square root of 66937441 is about 8181.5304802952. The cubic root of 66937441 is about 406.0283595420.

The spelling of 66937441 in words is "sixty-six million, nine hundred thirty-seven thousand, four hundred forty-one".