206724493 has 2 divisors, whose sum is σ = 206724494. Its totient is φ = 206724492.

The previous prime is 206724473. The next prime is 206724559. The reversal of 206724493 is 394427602.

206724493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180284329 + 26440164 = 13427^2 + 5142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206724493 is a prime.

It is a super-2 number, since 2×206724493² = 85470032012214098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206724473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103362246 + 103362247.

It is an arithmetic number, because the mean of its divisors is an integer number (103362247).

Almost surely, 2^206724493 is an apocalyptic number.

It is an amenable number.

206724493 is a deficient number, since it is larger than the sum of its proper divisors (1).

206724493 is an equidigital number, since it uses as much as digits as its factorization.

206724493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 206724493 is about 14377.9168518948. The cubic root of 206724493 is about 591.2856127729.

The spelling of 206724493 in words is "two hundred six million, seven hundred twenty-four thousand, four hundred ninety-three".