32661009 has 16 divisors (see below), whose sum is σ = 48475840. Its totient is φ = 21733920.

The previous prime is 32661007. The next prime is 32661053. The reversal of 32661009 is 90016623.

It is a happy number.

It is not a de Polignac number, because 32661009 - 2¹ = 32661007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32661007) 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 in 15 ways as a sum of consecutive naturals, for example, 24654 + ... + 25944.

It is an arithmetic number, because the mean of its divisors is an integer number (3029740).

Almost surely, 2^32661009 is an apocalyptic number.

It is an amenable number.

32661009 is a deficient number, since it is larger than the sum of its proper divisors (15814831).

32661009 is a wasteful number, since it uses less digits than its factorization.

With its successor (32661010) it forms an eRAP, since the sums of their prime factors are consecutive (2237 and 2238).

32661009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237 (or 2231 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 32661009 is about 5714.9811023310. The cubic root of 32661009 is about 319.6513422612.

The spelling of 32661009 in words is "thirty-two million, six hundred sixty-one thousand, nine".