214544661 has 4 divisors (see below), whose sum is σ = 286059552. Its totient is φ = 143029772.

The previous prime is 214544657. The next prime is 214544669. The reversal of 214544661 is 166445412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 214544661 - 2² = 214544657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214544669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35757441 + ... + 35757446.

It is an arithmetic number, because the mean of its divisors is an integer number (71514888).

Almost surely, 2^214544661 is an apocalyptic number.

It is an amenable number.

214544661 is a deficient number, since it is larger than the sum of its proper divisors (71514891).

214544661 is an equidigital number, since it uses as much as digits as its factorization.

214544661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71514890.

The product of its digits is 23040, while the sum is 33.

The square root of 214544661 is about 14647.3431379210. The cubic root of 214544661 is about 598.6494260868.

The spelling of 214544661 in words is "two hundred fourteen million, five hundred forty-four thousand, six hundred sixty-one".