666003411 has 16 divisors (see below), whose sum is σ = 1018501120. Its totient is φ = 429679080.

The previous prime is 666003397. The next prime is 666003413. The reversal of 666003411 is 114300666.

It is not a de Polignac number, because 666003411 - 2⁵ = 666003379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666003413) 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, 397015 + ... + 398688.

It is an arithmetic number, because the mean of its divisors is an integer number (63656320).

Almost surely, 2^666003411 is an apocalyptic number.

666003411 is a deficient number, since it is larger than the sum of its proper divisors (352497709).

666003411 is a wasteful number, since it uses less digits than its factorization.

666003411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795743 (or 795737 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 666003411 is about 25807.0418878259. The cubic root of 666003411 is about 873.2906650126.

The spelling of 666003411 in words is "six hundred sixty-six million, three thousand, four hundred eleven".