666436141 has 8 divisors (see below), whose sum is σ = 765589184. Its totient is φ = 568270080.

The previous prime is 666436123. The next prime is 666436187. The reversal of 666436141 is 141634666.

666436141 = T₂₃₈ + T₂₃₉ + ... + T₁₅₈₈.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 666436141 - 2⁷ = 666436013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 666436141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666436241) 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, 245295 + ... + 247996.

It is an arithmetic number, because the mean of its divisors is an integer number (95698648).

Almost surely, 2^666436141 is an apocalyptic number.

It is an amenable number.

666436141 is a deficient number, since it is larger than the sum of its proper divisors (99153043).

666436141 is a wasteful number, since it uses less digits than its factorization.

666436141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493491.

The product of its digits is 62208, while the sum is 37.

The square root of 666436141 is about 25815.4244784005. The cubic root of 666436141 is about 873.4797617686.

The spelling of 666436141 in words is "six hundred sixty-six million, four hundred thirty-six thousand, one hundred forty-one".