214064639 has 2 divisors, whose sum is σ = 214064640. Its totient is φ = 214064638.

The previous prime is 214064623. The next prime is 214064693. The reversal of 214064639 is 936460412.

Together with next prime (214064693) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 214064639 - 2⁴ = 214064623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 214064599 and 214064608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214063639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107032319 + 107032320.

It is an arithmetic number, because the mean of its divisors is an integer number (107032320).

Almost surely, 2^214064639 is an apocalyptic number.

214064639 is a deficient number, since it is larger than the sum of its proper divisors (1).

214064639 is an equidigital number, since it uses as much as digits as its factorization.

214064639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 214064639 is about 14630.9479870581. The cubic root of 214064639 is about 598.2026201600.

The spelling of 214064639 in words is "two hundred fourteen million, sixty-four thousand, six hundred thirty-nine".