32007661 has 4 divisors (see below), whose sum is σ = 36580192. Its totient is φ = 27435132.

The previous prime is 32007643. The next prime is 32007667. The reversal of 32007661 is 16670023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 32007661 - 2⁹ = 32007149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32007667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2286255 + ... + 2286268.

It is an arithmetic number, because the mean of its divisors is an integer number (9145048).

Almost surely, 2^32007661 is an apocalyptic number.

It is an amenable number.

32007661 is a deficient number, since it is larger than the sum of its proper divisors (4572531).

32007661 is an equidigital number, since it uses as much as digits as its factorization.

32007661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572530.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 32007661 is about 5657.5313521005. The cubic root of 32007661 is about 317.5055439543.

Adding to 32007661 its reverse (16670023), we get a palindrome (48677684).

The spelling of 32007661 in words is "thirty-two million, seven thousand, six hundred sixty-one".