32991066 has 24 divisors (see below), whose sum is σ = 71809920. Its totient is φ = 10946376.

The previous prime is 32991061. The next prime is 32991071. The reversal of 32991066 is 66019923.

It is an interprime number because it is at equal distance from previous prime (32991061) and next prime (32991071).

It is a self number, because there is not a number n which added to its sum of digits gives 32991066.

It is not an unprimeable number, because it can be changed into a prime (32991061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96 + ... + 8123.

It is an arithmetic number, because the mean of its divisors is an integer number (2992080).

Almost surely, 2^32991066 is an apocalyptic number.

32991066 is an abundant number, since it is smaller than the sum of its proper divisors (38818854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32991066 is a wasteful number, since it uses less digits than its factorization.

32991066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450 (or 8447 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 32991066 is about 5743.7849890120. The cubic root of 32991066 is about 320.7244848197.

The spelling of 32991066 in words is "thirty-two million, nine hundred ninety-one thousand, sixty-six".