666441342 has 24 divisors (see below), whose sum is σ = 1650236016. Its totient is φ = 190411776.

The previous prime is 666441323. The next prime is 666441371. The reversal of 666441342 is 243144666.

It is a junction number, because it is equal to n+sod(n) for n = 666441297 and 666441306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2644483 + ... + 2644734.

It is an arithmetic number, because the mean of its divisors is an integer number (68759834).

Almost surely, 2^666441342 is an apocalyptic number.

666441342 is an abundant number, since it is smaller than the sum of its proper divisors (983794674).

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

666441342 is a wasteful number, since it uses less digits than its factorization.

666441342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289232 (or 5289229 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 666441342 is about 25815.5252125538. The cubic root of 666441342 is about 873.4820340325.

The spelling of 666441342 in words is "six hundred sixty-six million, four hundred forty-one thousand, three hundred forty-two".