666783337 has 8 divisors (see below), whose sum is σ = 727587360. Its totient is φ = 606010560.

The previous prime is 666783331. The next prime is 666783373. The reversal of 666783337 is 733387666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 666783337 - 2¹¹ = 666781289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666783331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75489 + ... + 83857.

It is an arithmetic number, because the mean of its divisors is an integer number (90948420).

Almost surely, 2^666783337 is an apocalyptic number.

It is an amenable number.

666783337 is a deficient number, since it is larger than the sum of its proper divisors (60804023).

666783337 is a wasteful number, since it uses less digits than its factorization.

666783337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15623.

The product of its digits is 2286144, while the sum is 49.

The square root of 666783337 is about 25822.1481871668. The cubic root of 666783337 is about 873.6314222258.

The spelling of 666783337 in words is "six hundred sixty-six million, seven hundred eighty-three thousand, three hundred thirty-seven".