214765813 has 2 divisors, whose sum is σ = 214765814. Its totient is φ = 214765812.

The previous prime is 214765787. The next prime is 214765819. The reversal of 214765813 is 318567412.

214765813 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 can be written as a sum of positive squares in only one way, i.e., 185150449 + 29615364 = 13607^2 + 5442^2 .

It is a cyclic number.

It is not a de Polignac number, because 214765813 - 2²¹ = 212668661 is a prime.

It is a super-2 number, since 2×214765813² = 92248708867101938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214765819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107382906 + 107382907.

It is an arithmetic number, because the mean of its divisors is an integer number (107382907).

Almost surely, 2^214765813 is an apocalyptic number.

It is an amenable number.

214765813 is a deficient number, since it is larger than the sum of its proper divisors (1).

214765813 is an equidigital number, since it uses as much as digits as its factorization.

214765813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 214765813 is about 14654.8904124186. The cubic root of 214765813 is about 598.8550508012.

The spelling of 214765813 in words is "two hundred fourteen million, seven hundred sixty-five thousand, eight hundred thirteen".