40645608 has 32 divisors (see below), whose sum is σ = 101779200. Its totient is φ = 13526528.

The previous prime is 40645567. The next prime is 40645609. The reversal of 40645608 is 80654604.

It is a happy number.

40645608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40645609) 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, 21385 + ... + 23207.

It is an arithmetic number, because the mean of its divisors is an integer number (3180600).

Almost surely, 2^40645608 is an apocalyptic number.

It is an amenable number.

40645608 is an abundant number, since it is smaller than the sum of its proper divisors (61133592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40645608 is a wasteful number, since it uses less digits than its factorization.

40645608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761 (or 2757 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 40645608 is about 6375.3908115503. The cubic root of 40645608 is about 343.8253349818.

The spelling of 40645608 in words is "forty million, six hundred forty-five thousand, six hundred eight".