666533334 has 16 divisors (see below), whose sum is σ = 1337356800. Its totient is φ = 221462760.

The previous prime is 666533333. The next prime is 666533339. The reversal of 666533334 is 433335666.

It is a junction number, because it is equal to n+sod(n) for n = 666533292 and 666533301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666533333) 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, 176734 + ... + 180465.

It is an arithmetic number, because the mean of its divisors is an integer number (83584800).

Almost surely, 2^666533334 is an apocalyptic number.

666533334 is an abundant number, since it is smaller than the sum of its proper divisors (670823466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666533334 is a wasteful number, since it uses less digits than its factorization.

666533334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357515.

The product of its digits is 349920, while the sum is 39.

The square root of 666533334 is about 25817.3068696175. The cubic root of 666533334 is about 873.5222224469.

The spelling of 666533334 in words is "six hundred sixty-six million, five hundred thirty-three thousand, three hundred thirty-four".