666541351 has 8 divisors (see below), whose sum is σ = 762149024. Its totient is φ = 571030560.

The previous prime is 666541333. The next prime is 666541361. The reversal of 666541351 is 153145666.

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

It is a cyclic number.

It is not a de Polignac number, because 666541351 - 2¹¹ = 666539303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 666541351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666541301) 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, 8820 + ... + 37561.

It is an arithmetic number, because the mean of its divisors is an integer number (95268628).

Almost surely, 2^666541351 is an apocalyptic number.

666541351 is a deficient number, since it is larger than the sum of its proper divisors (95607673).

666541351 is a wasteful number, since it uses less digits than its factorization.

666541351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48441.

The product of its digits is 64800, while the sum is 37.

The square root of 666541351 is about 25817.4621332152. The cubic root of 666541351 is about 873.5257246471.

The spelling of 666541351 in words is "six hundred sixty-six million, five hundred forty-one thousand, three hundred fifty-one".