214158661 has 2 divisors, whose sum is σ = 214158662. Its totient is φ = 214158660.

The previous prime is 214158647. The next prime is 214158677. The reversal of 214158661 is 166851412.

214158661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208253761 + 5904900 = 14431^2 + 2430^2 .

It is a cyclic number.

It is not a de Polignac number, because 214158661 - 2¹⁵ = 214125893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214158611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107079330 + 107079331.

It is an arithmetic number, because the mean of its divisors is an integer number (107079331).

Almost surely, 2^214158661 is an apocalyptic number.

It is an amenable number.

214158661 is a deficient number, since it is larger than the sum of its proper divisors (1).

214158661 is an equidigital number, since it uses as much as digits as its factorization.

214158661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 34.

The square root of 214158661 is about 14634.1607548913. The cubic root of 214158661 is about 598.2901886852.

The spelling of 214158661 in words is "two hundred fourteen million, one hundred fifty-eight thousand, six hundred sixty-one".