40340663 has 4 divisors (see below), whose sum is σ = 44008008. Its totient is φ = 36673320.

The previous prime is 40340647. The next prime is 40340669. The reversal of 40340663 is 36604304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40340663 - 2⁴ = 40340647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40340669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1833656 + ... + 1833677.

It is an arithmetic number, because the mean of its divisors is an integer number (11002002).

Almost surely, 2^40340663 is an apocalyptic number.

40340663 is a deficient number, since it is larger than the sum of its proper divisors (3667345).

40340663 is a wasteful number, since it uses less digits than its factorization.

40340663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667344.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 40340663 is about 6351.4299964654. The cubic root of 40340663 is about 342.9633220165.

Adding to 40340663 its reverse (36604304), we get a palindrome (76944967).

The spelling of 40340663 in words is "forty million, three hundred forty thousand, six hundred sixty-three".