40263663 has 16 divisors (see below), whose sum is σ = 58810752. Its totient is φ = 24300000.

The previous prime is 40263649. The next prime is 40263677. The reversal of 40263663 is 36636204.

It is an interprime number because it is at equal distance from previous prime (40263649) and next prime (40263677).

It is not a de Polignac number, because 40263663 - 2⁸ = 40263407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40263663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40263683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5853 + ... + 10713.

It is an arithmetic number, because the mean of its divisors is an integer number (3675672).

Almost surely, 2^40263663 is an apocalyptic number.

40263663 is a deficient number, since it is larger than the sum of its proper divisors (18547089).

40263663 is a wasteful number, since it uses less digits than its factorization.

40263663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 40263663 is about 6345.3654741079. The cubic root of 40263663 is about 342.7449733015.

Adding to 40263663 its reverse (36636204), we get a palindrome (76899867).

The spelling of 40263663 in words is "forty million, two hundred sixty-three thousand, six hundred sixty-three".