40688684 has 12 divisors (see below), whose sum is σ = 75393864. Its totient is φ = 19147584.

The previous prime is 40688677. The next prime is 40688689. The reversal of 40688684 is 48688604.

40688684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×40688684³ (a number of 24 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (40688689) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 299114 + ... + 299249.

It is an arithmetic number, because the mean of its divisors is an integer number (6282822).

Almost surely, 2^40688684 is an apocalyptic number.

It is an amenable number.

40688684 is a deficient number, since it is larger than the sum of its proper divisors (34705180).

40688684 is a wasteful number, since it uses less digits than its factorization.

40688684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598384 (or 598382 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The square root of 40688684 is about 6378.7682196487. The cubic root of 40688684 is about 343.9467535217.

The spelling of 40688684 in words is "forty million, six hundred eighty-eight thousand, six hundred eighty-four".