666665337 has 16 divisors (see below), whose sum is σ = 966562688. Its totient is φ = 406270080.

The previous prime is 666665317. The next prime is 666665341. The reversal of 666665337 is 733566666.

It is not a de Polignac number, because 666665337 - 2¹¹ = 666663289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666665317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78964 + ... + 86997.

It is an arithmetic number, because the mean of its divisors is an integer number (60410168).

Almost surely, 2^666665337 is an apocalyptic number.

It is an amenable number.

666665337 is a deficient number, since it is larger than the sum of its proper divisors (299897351).

666665337 is a wasteful number, since it uses less digits than its factorization.

666665337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166080.

The product of its digits is 2449440, while the sum is 48.

The square root of 666665337 is about 25819.8632258190. The cubic root of 666665337 is about 873.5798839505.

The spelling of 666665337 in words is "six hundred sixty-six million, six hundred sixty-five thousand, three hundred thirty-seven".