214689667 has 2 divisors, whose sum is σ = 214689668. Its totient is φ = 214689666.

The previous prime is 214689649. The next prime is 214689677. The reversal of 214689667 is 766986412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 214689667 - 2¹⁹ = 214165379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 214689667.

It is not a weakly prime, because it can be changed into another prime (214689647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107344833 + 107344834.

It is an arithmetic number, because the mean of its divisors is an integer number (107344834).

Almost surely, 2^214689667 is an apocalyptic number.

214689667 is a deficient number, since it is larger than the sum of its proper divisors (1).

214689667 is an equidigital number, since it uses as much as digits as its factorization.

214689667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 214689667 is about 14652.2922097534. The cubic root of 214689667 is about 598.7842670230.

The spelling of 214689667 in words is "two hundred fourteen million, six hundred eighty-nine thousand, six hundred sixty-seven".