666105461 has 24 divisors (see below), whose sum is σ = 818403264. Its totient is φ = 539468160.

The previous prime is 666105449. The next prime is 666105467. The reversal of 666105461 is 164501666.

It is not a de Polignac number, because 666105461 - 2⁶ = 666105397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666105467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89981 + ... + 97101.

It is an arithmetic number, because the mean of its divisors is an integer number (34100136).

Almost surely, 2^666105461 is an apocalyptic number.

It is an amenable number.

666105461 is a deficient number, since it is larger than the sum of its proper divisors (152297803).

666105461 is a wasteful number, since it uses less digits than its factorization.

666105461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7241 (or 7234 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 666105461 is about 25809.0189856182. The cubic root of 666105461 is about 873.3352667666.

The spelling of 666105461 in words is "six hundred sixty-six million, one hundred five thousand, four hundred sixty-one".