40568664 has 48 divisors (see below), whose sum is σ = 107757000. Its totient is φ = 12725248.

The previous prime is 40568663. The next prime is 40568683. The reversal of 40568664 is 46686504.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40568663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4012 + ... + 9860.

Almost surely, 2^40568664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40568664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53878500).

40568664 is an abundant number, since it is smaller than the sum of its proper divisors (67188336).

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

40568664 is a wasteful number, since it uses less digits than its factorization.

40568664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5892 (or 5871 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 40568664 is about 6369.3534993750. The cubic root of 40568664 is about 343.6082388907.

It can be divided in two parts, 4056 and 8664, that multiplied together give a square (35141184 = 5928²).

The spelling of 40568664 in words is "forty million, five hundred sixty-eight thousand, six hundred sixty-four".