32660491 has 2 divisors, whose sum is σ = 32660492. Its totient is φ = 32660490.

The previous prime is 32660489. The next prime is 32660513. The reversal of 32660491 is 19406623.

It is a weak prime.

It is an emirp because it is prime and its reverse (19406623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32660491 - 2¹ = 32660489 is a prime.

It is a super-2 number, since 2×32660491² = 2133415344722162, which contains 22 as substring.

Together with 32660489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (32660401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16330245 + 16330246.

It is an arithmetic number, because the mean of its divisors is an integer number (16330246).

Almost surely, 2^32660491 is an apocalyptic number.

32660491 is a deficient number, since it is larger than the sum of its proper divisors (1).

32660491 is an equidigital number, since it uses as much as digits as its factorization.

32660491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 32660491 is about 5714.9357826663. The cubic root of 32660491 is about 319.6496523740.

The spelling of 32660491 in words is "thirty-two million, six hundred sixty thousand, four hundred ninety-one".