32668749 has 12 divisors (see below), whose sum is σ = 47343036. Its totient is φ = 21707712.

The previous prime is 32668739. The next prime is 32668787. The reversal of 32668749 is 94786623.

It can be written as a sum of positive squares in 2 ways, for example, as 11902500 + 20766249 = 3450^2 + 4557^2 .

It is not a de Polignac number, because 32668749 - 2¹¹ = 32666701 is a prime.

It is a super-2 number, since 2×32668749² = 2134494322450002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32668709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2982 + ... + 8615.

It is an arithmetic number, because the mean of its divisors is an integer number (3945253).

Almost surely, 2^32668749 is an apocalyptic number.

It is an amenable number.

32668749 is a deficient number, since it is larger than the sum of its proper divisors (14674287).

32668749 is a wasteful number, since it uses less digits than its factorization.

32668749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11916 (or 11913 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 32668749 is about 5715.6582298105. The cubic root of 32668749 is about 319.6765905726.

The spelling of 32668749 in words is "thirty-two million, six hundred sixty-eight thousand, seven hundred forty-nine".