40664706 has 8 divisors (see below), whose sum is σ = 81329424. Its totient is φ = 13554900.

The previous prime is 40664681. The next prime is 40664707. The reversal of 40664706 is 60746604.

40664706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

40664706 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (40664707) 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, 3388720 + ... + 3388731.

It is an arithmetic number, because the mean of its divisors is an integer number (10166178).

Almost surely, 2^40664706 is an apocalyptic number.

40664706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40664706 is a wasteful number, since it uses less digits than its factorization.

40664706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6777456.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 40664706 is about 6376.8884261840. Note that the first 3 decimals coincide. The cubic root of 40664706 is about 343.8791771917.

The spelling of 40664706 in words is "forty million, six hundred sixty-four thousand, seven hundred six".