40608643 has 8 divisors (see below), whose sum is σ = 42810320. Its totient is φ = 38413440.

The previous prime is 40608637. The next prime is 40608649. The reversal of 40608643 is 34680604.

40608643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40608637) and next prime (40608649).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40608643 - 2¹⁷ = 40477571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40608649) 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 7 ways as a sum of consecutive naturals, for example, 16663 + ... + 18943.

It is an arithmetic number, because the mean of its divisors is an integer number (5351290).

Almost surely, 2^40608643 is an apocalyptic number.

40608643 is a deficient number, since it is larger than the sum of its proper divisors (2201677).

40608643 is a wasteful number, since it uses less digits than its factorization.

40608643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 40608643 is about 6372.4911141562. The cubic root of 40608643 is about 343.7210731361.

The spelling of 40608643 in words is "forty million, six hundred eight thousand, six hundred forty-three".