40605678 has 16 divisors (see below), whose sum is σ = 90234960. Its totient is φ = 13535208.

The previous prime is 40605659. The next prime is 40605683. The reversal of 40605678 is 87650604.

It is a happy number.

40605678 is a `hidden beast` number, since 40 + 605 + 6 + 7 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 375925 + ... + 376032.

It is an arithmetic number, because the mean of its divisors is an integer number (5639685).

Almost surely, 2^40605678 is an apocalyptic number.

40605678 is an abundant number, since it is smaller than the sum of its proper divisors (49629282).

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

40605678 is a wasteful number, since it uses less digits than its factorization.

40605678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751968 (or 751962 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 40605678 is about 6372.2584693341. The cubic root of 40605678 is about 343.7127074475.

The spelling of 40605678 in words is "forty million, six hundred five thousand, six hundred seventy-eight".