336666561 has 32 divisors (see below), whose sum is σ = 563278848. Its totient is φ = 173759040.

The previous prime is 336666497. The next prime is 336666581. The reversal of 336666561 is 165666633.

It is not a de Polignac number, because 336666561 - 2⁶ = 336666497 is a prime.

It is a super-2 number, since 2×336666561² = 226688746591133442, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (336666581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31626 + ... + 40908.

It is an arithmetic number, because the mean of its divisors is an integer number (17602464).

Almost surely, 2^336666561 is an apocalyptic number.

It is an amenable number.

336666561 is a deficient number, since it is larger than the sum of its proper divisors (226612287).

336666561 is a wasteful number, since it uses less digits than its factorization.

336666561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9461.

The product of its digits is 349920, while the sum is 42.

The square root of 336666561 is about 18348.4757132575. The cubic root of 336666561 is about 695.6647443203.

The spelling of 336666561 in words is "three hundred thirty-six million, six hundred sixty-six thousand, five hundred sixty-one".