40666885 has 32 divisors (see below), whose sum is σ = 59185152. Its totient is φ = 26231040.

The previous prime is 40666877. The next prime is 40666889. The reversal of 40666885 is 58866604.

It is not a de Polignac number, because 40666885 - 2³ = 40666877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40666889) 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 31 ways as a sum of consecutive naturals, for example, 39639 + ... + 40651.

It is an arithmetic number, because the mean of its divisors is an integer number (1849536).

Almost surely, 2^40666885 is an apocalyptic number.

It is an amenable number.

40666885 is a deficient number, since it is larger than the sum of its proper divisors (18518267).

40666885 is a wasteful number, since it uses less digits than its factorization.

40666885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 40666885 is about 6377.0592752459. The cubic root of 40666885 is about 343.8853192857.

The spelling of 40666885 in words is "forty million, six hundred sixty-six thousand, eight hundred eighty-five".