32665661 has 8 divisors (see below), whose sum is σ = 38536704. Its totient is φ = 27095760.

The previous prime is 32665657. The next prime is 32665667. The reversal of 32665661 is 16656623.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32665661 - 2² = 32665657 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 (32665667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75050 + ... + 75483.

It is an arithmetic number, because the mean of its divisors is an integer number (4817088).

Almost surely, 2^32665661 is an apocalyptic number.

32665661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

32665661 is a deficient number, since it is larger than the sum of its proper divisors (5871043).

32665661 is a wasteful number, since it uses less digits than its factorization.

32665661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150571.

The product of its digits is 38880, while the sum is 35.

The square root of 32665661 is about 5715.3880883104. The cubic root of 32665661 is about 319.6665178227. Note that the first 3 decimals are identical.

The spelling of 32665661 in words is "thirty-two million, six hundred sixty-five thousand, six hundred sixty-one".