214666605 has 20 divisors (see below), whose sum is σ = 384810492. Its totient is φ = 114488640.

The previous prime is 214666577. The next prime is 214666607. The reversal of 214666605 is 506666412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60186564 + 154480041 = 7758^2 + 12429^2 .

It is not a de Polignac number, because 214666605 - 2¹² = 214662509 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 214666605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214666607) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 264616 + ... + 265425.

Almost surely, 2^214666605 is an apocalyptic number.

It is an amenable number.

214666605 is a deficient number, since it is larger than the sum of its proper divisors (170143887).

214666605 is an equidigital number, since it uses as much as digits as its factorization.

214666605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530058 (or 530049 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 214666605 is about 14651.5052127759. The cubic root of 214666605 is about 598.7628257532.

The spelling of 214666605 in words is "two hundred fourteen million, six hundred sixty-six thousand, six hundred five".