32669681 has 4 divisors (see below), whose sum is σ = 35639664. Its totient is φ = 29699700.

The previous prime is 32669671. The next prime is 32669711. The reversal of 32669681 is 18696623.

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 32669681 - 2¹⁸ = 32407537 is a prime.

It is a super-2 number, since 2×32669681² = 2134616113283522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32669621) 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, 1484975 + ... + 1484996.

It is an arithmetic number, because the mean of its divisors is an integer number (8909916).

Almost surely, 2^32669681 is an apocalyptic number.

It is an amenable number.

32669681 is a deficient number, since it is larger than the sum of its proper divisors (2969983).

32669681 is a wasteful number, since it uses less digits than its factorization.

32669681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969982.

The product of its digits is 93312, while the sum is 41.

The square root of 32669681 is about 5715.7397596462. The cubic root of 32669681 is about 319.6796305396.

It can be divided in two parts, 326 and 69681, that added together give a palindrome (70007).

The spelling of 32669681 in words is "thirty-two million, six hundred sixty-nine thousand, six hundred eighty-one".