40664541 has 32 divisors (see below), whose sum is σ = 59811840. Its totient is φ = 24482304.

The previous prime is 40664501. The next prime is 40664549. The reversal of 40664541 is 14546604.

It is not a de Polignac number, because 40664541 - 2¹¹ = 40662493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40664499 and 40664508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40664549) 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 31 ways as a sum of consecutive naturals, for example, 115021 + ... + 115373.

It is an arithmetic number, because the mean of its divisors is an integer number (1869120).

Almost surely, 2^40664541 is an apocalyptic number.

It is an amenable number.

40664541 is a deficient number, since it is larger than the sum of its proper divisors (19147299).

40664541 is a wasteful number, since it uses less digits than its factorization.

40664541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 40664541 is about 6376.8754888268. The cubic root of 40664541 is about 343.8787120862.

The spelling of 40664541 in words is "forty million, six hundred sixty-four thousand, five hundred forty-one".