214509643 has 2 divisors, whose sum is σ = 214509644. Its totient is φ = 214509642.

The previous prime is 214509629. The next prime is 214509649. The reversal of 214509643 is 346905412.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 214509643 - 2²¹ = 212412491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 214509599 and 214509608.

It is not a weakly prime, because it can be changed into another prime (214509649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107254821 + 107254822.

It is an arithmetic number, because the mean of its divisors is an integer number (107254822).

Almost surely, 2^214509643 is an apocalyptic number.

214509643 is a deficient number, since it is larger than the sum of its proper divisors (1).

214509643 is an equidigital number, since it uses as much as digits as its factorization.

214509643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 214509643 is about 14646.1477187689. The cubic root of 214509643 is about 598.6168537758.

The spelling of 214509643 in words is "two hundred fourteen million, five hundred nine thousand, six hundred forty-three".