40685567 has 6 divisors (see below), whose sum is σ = 44056152. Its totient is φ = 37555752.

The previous prime is 40685543. The next prime is 40685569. The reversal of 40685567 is 76558604.

It is not a de Polignac number, because 40685567 - 2¹⁰ = 40684543 is a prime.

It is a super-2 number, since 2×40685567² = 3310630724222978, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40685569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120203 + ... + 120540.

It is an arithmetic number, because the mean of its divisors is an integer number (7342692).

Almost surely, 2^40685567 is an apocalyptic number.

40685567 is a deficient number, since it is larger than the sum of its proper divisors (3370585).

40685567 is a wasteful number, since it uses less digits than its factorization.

40685567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240769 (or 240756 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 40685567 is about 6378.5238888006. The cubic root of 40685567 is about 343.9379704949.

The spelling of 40685567 in words is "forty million, six hundred eighty-five thousand, five hundred sixty-seven".