214701661 has 4 divisors (see below), whose sum is σ = 217288512. Its totient is φ = 212114812.

The previous prime is 214701637. The next prime is 214701667. The reversal of 214701661 is 166107412.

214701661 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214701661 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 (214701667) 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, 1293301 + ... + 1293466.

It is an arithmetic number, because the mean of its divisors is an integer number (54322128).

Almost surely, 2^214701661 is an apocalyptic number.

It is an amenable number.

214701661 is a deficient number, since it is larger than the sum of its proper divisors (2586851).

214701661 is an equidigital number, since it uses as much as digits as its factorization.

214701661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586850.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 214701661 is about 14652.7014915339. The cubic root of 214701661 is about 598.7954175127.

The spelling of 214701661 in words is "two hundred fourteen million, seven hundred one thousand, six hundred sixty-one".