213948667 has 2 divisors, whose sum is σ = 213948668. Its totient is φ = 213948666.

The previous prime is 213948649. The next prime is 213948671. The reversal of 213948667 is 766849312.

213948667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213948667 - 2¹¹ = 213946619 is a prime.

It is a super-2 number, since 2×213948667² = 91548064222153778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213948677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106974333 + 106974334.

It is an arithmetic number, because the mean of its divisors is an integer number (106974334).

Almost surely, 2^213948667 is an apocalyptic number.

213948667 is a deficient number, since it is larger than the sum of its proper divisors (1).

213948667 is an equidigital number, since it uses as much as digits as its factorization.

213948667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 46.

The square root of 213948667 is about 14626.9842072794. The cubic root of 213948667 is about 598.0945729108.

The spelling of 213948667 in words is "two hundred thirteen million, nine hundred forty-eight thousand, six hundred sixty-seven".