40646768 has 10 divisors (see below), whose sum is σ = 78753144. Its totient is φ = 20323376.

The previous prime is 40646761. The next prime is 40646789. The reversal of 40646768 is 86764604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40646761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270196 + ... + 1270227.

Almost surely, 2^40646768 is an apocalyptic number.

It is an amenable number.

40646768 is a deficient number, since it is larger than the sum of its proper divisors (38106376).

40646768 is a wasteful number, since it uses less digits than its factorization.

40646768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540431 (or 2540425 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 40646768 is about 6375.4817857163. The cubic root of 40646768 is about 343.8286058033.

It can be divided in two parts, 40646 and 768, that added together give a palindrome (41414).

The spelling of 40646768 in words is "forty million, six hundred forty-six thousand, seven hundred sixty-eight".