336206561 has 2 divisors, whose sum is σ = 336206562. Its totient is φ = 336206560.

The previous prime is 336206543. The next prime is 336206573. The reversal of 336206561 is 165602633.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325441600 + 10764961 = 18040^2 + 3281^2 .

It is a cyclic number.

It is not a de Polignac number, because 336206561 - 2²² = 332012257 is a prime.

It is a super-2 number, since 2×336206561² = 226069703318893442, which contains 22 as substring.

It is equal to p_18101597 and since 336206561 and 18101597 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (336206581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168103280 + 168103281.

It is an arithmetic number, because the mean of its divisors is an integer number (168103281).

Almost surely, 2^336206561 is an apocalyptic number.

It is an amenable number.

336206561 is a deficient number, since it is larger than the sum of its proper divisors (1).

336206561 is an equidigital number, since it uses as much as digits as its factorization.

336206561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 336206561 is about 18335.9363273327. The cubic root of 336206561 is about 695.3477624007.

The spelling of 336206561 in words is "three hundred thirty-six million, two hundred six thousand, five hundred sixty-one".