206451653 has 2 divisors, whose sum is σ = 206451654. Its totient is φ = 206451652.

The previous prime is 206451631. The next prime is 206451659. The reversal of 206451653 is 356154602.

206451653 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., 125037124 + 81414529 = 11182^2 + 9023^2 .

It is a cyclic number.

It is not a de Polignac number, because 206451653 - 2¹² = 206447557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206451659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103225826 + 103225827.

It is an arithmetic number, because the mean of its divisors is an integer number (103225827).

Almost surely, 2^206451653 is an apocalyptic number.

It is an amenable number.

206451653 is a deficient number, since it is larger than the sum of its proper divisors (1).

206451653 is an equidigital number, since it uses as much as digits as its factorization.

206451653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 206451653 is about 14368.4255574506. The cubic root of 206451653 is about 591.0253672154.

The spelling of 206451653 in words is "two hundred six million, four hundred fifty-one thousand, six hundred fifty-three".