214594661 has 4 divisors (see below), whose sum is σ = 215684172. Its totient is φ = 213505152.

The previous prime is 214594657. The next prime is 214594663. The reversal of 214594661 is 166495412.

214594661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135722500 + 78872161 = 11650^2 + 8881^2 .

It is a cyclic number.

It is not a de Polignac number, because 214594661 - 2² = 214594657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214594663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544460 + ... + 544853.

It is an arithmetic number, because the mean of its divisors is an integer number (53921043).

Almost surely, 2^214594661 is an apocalyptic number.

It is an amenable number.

214594661 is a deficient number, since it is larger than the sum of its proper divisors (1089511).

214594661 is a wasteful number, since it uses less digits than its factorization.

214594661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089510.

The product of its digits is 51840, while the sum is 38.

The square root of 214594661 is about 14649.0498326683. The cubic root of 214594661 is about 598.6959278985.

The spelling of 214594661 in words is "two hundred fourteen million, five hundred ninety-four thousand, six hundred sixty-one".