32866261 has 2 divisors, whose sum is σ = 32866262. Its totient is φ = 32866260.

The previous prime is 32866259. The next prime is 32866283. The reversal of 32866261 is 16266823.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28826161 + 4040100 = 5369^2 + 2010^2 .

It is an emirp because it is prime and its reverse (16266823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32866261 - 2¹ = 32866259 is a prime.

It is a super-2 number, since 2×32866261² = 2160382224240242, which contains 22 as substring.

Together with 32866259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32861261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16433130 + 16433131.

It is an arithmetic number, because the mean of its divisors is an integer number (16433131).

Almost surely, 2^32866261 is an apocalyptic number.

It is an amenable number.

32866261 is a deficient number, since it is larger than the sum of its proper divisors (1).

32866261 is an equidigital number, since it uses as much as digits as its factorization.

32866261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 32866261 is about 5732.9103429236. The cubic root of 32866261 is about 320.3195408375.

The spelling of 32866261 in words is "thirty-two million, eight hundred sixty-six thousand, two hundred sixty-one".