11401663 has 16 divisors (see below), whose sum is σ = 14324800. Its totient is φ = 9017568.

The previous prime is 11401657. The next prime is 11401667. The reversal of 11401663 is 36610411.

It is a happy number.

It is not a de Polignac number, because 11401663 - 2⁹ = 11401151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401667) 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, 3181 + ... + 5737.

It is an arithmetic number, because the mean of its divisors is an integer number (895300).

Almost surely, 2^11401663 is an apocalyptic number.

11401663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11401663 is a deficient number, since it is larger than the sum of its proper divisors (2923137).

11401663 is an equidigital number, since it uses as much as digits as its factorization.

11401663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591 (or 2577 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 11401663 is about 3376.6348632922. The cubic root of 11401663 is about 225.0726547258.

The spelling of 11401663 in words is "eleven million, four hundred one thousand, six hundred sixty-three".