40597666 has 16 divisors (see below), whose sum is σ = 64795680. Its totient is φ = 19010880.

The previous prime is 40597643. The next prime is 40597673. The reversal of 40597666 is 66679504.

40597666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4345 + ... + 10003.

It is an arithmetic number, because the mean of its divisors is an integer number (4049730).

Almost surely, 2^40597666 is an apocalyptic number.

40597666 is a deficient number, since it is larger than the sum of its proper divisors (24198014).

40597666 is a wasteful number, since it uses less digits than its factorization.

40597666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5889.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 40597666 is about 6371.6297758109. The cubic root of 40597666 is about 343.6900997114.

The spelling of 40597666 in words is "forty million, five hundred ninety-seven thousand, six hundred sixty-six".