32868509 has 2 divisors, whose sum is σ = 32868510. Its totient is φ = 32868508.

The previous prime is 32868481. The next prime is 32868523. The reversal of 32868509 is 90586823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27931225 + 4937284 = 5285^2 + 2222^2 .

It is an emirp because it is prime and its reverse (90586823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32868509 - 2¹² = 32864413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32868529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16434254 + 16434255.

It is an arithmetic number, because the mean of its divisors is an integer number (16434255).

Almost surely, 2^32868509 is an apocalyptic number.

It is an amenable number.

32868509 is a deficient number, since it is larger than the sum of its proper divisors (1).

32868509 is an equidigital number, since it uses as much as digits as its factorization.

32868509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 32868509 is about 5733.1064005476. The cubic root of 32868509 is about 320.3268437868.

The spelling of 32868509 in words is "thirty-two million, eight hundred sixty-eight thousand, five hundred nine".