32667661 has 4 divisors (see below), whose sum is σ = 35180572. Its totient is φ = 30154752.

The previous prime is 32667647. The next prime is 32667667. The reversal of 32667661 is 16676623.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17065161 + 15602500 = 4131^2 + 3950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32667661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32667661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32667667) 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 3 ways as a sum of consecutive naturals, for example, 1256436 + ... + 1256461.

It is an arithmetic number, because the mean of its divisors is an integer number (8795143).

Almost surely, 2^32667661 is an apocalyptic number.

It is an amenable number.

32667661 is a deficient number, since it is larger than the sum of its proper divisors (2512911).

32667661 is a wasteful number, since it uses less digits than its factorization.

32667661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512910.

The product of its digits is 54432, while the sum is 37.

The square root of 32667661 is about 5715.5630518786. The cubic root of 32667661 is about 319.6730416969.

The spelling of 32667661 in words is "thirty-two million, six hundred sixty-seven thousand, six hundred sixty-one".