40665522 has 32 divisors (see below), whose sum is σ = 84913920. Its totient is φ = 12970880.

The previous prime is 40665517. The next prime is 40665523. The reversal of 40665522 is 22556604.

It is a self number, because there is not a number n which added to its sum of digits gives 40665522.

It is not an unprimeable number, because it can be changed into a prime (40665523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11479 + ... + 14597.

It is an arithmetic number, because the mean of its divisors is an integer number (2653560).

Almost surely, 2^40665522 is an apocalyptic number.

40665522 is an abundant number, since it is smaller than the sum of its proper divisors (44248398).

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

40665522 is a wasteful number, since it uses less digits than its factorization.

40665522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 40665522 is about 6376.9524069104. The cubic root of 40665522 is about 343.8814773315.

The spelling of 40665522 in words is "forty million, six hundred sixty-five thousand, five hundred twenty-two".