40663760 has 20 divisors (see below), whose sum is σ = 94543428. Its totient is φ = 16265472.

The previous prime is 40663751. The next prime is 40663787. The reversal of 40663760 is 6736604.

40663760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8809024 + 31854736 = 2968^2 + 5644^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

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, 254069 + ... + 254228.

Almost surely, 2^40663760 is an apocalyptic number.

40663760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40663760 is an abundant number, since it is smaller than the sum of its proper divisors (53879668).

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

40663760 is a wasteful number, since it uses less digits than its factorization.

40663760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508310 (or 508304 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 40663760 is about 6376.8142516464. The cubic root of 40663760 is about 343.8765105695.

The spelling of 40663760 in words is "forty million, six hundred sixty-three thousand, seven hundred sixty".