11663507 has 4 divisors (see below), whose sum is σ = 12170640. Its totient is φ = 11156376.

The previous prime is 11663503. The next prime is 11663527. The reversal of 11663507 is 70536611.

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 11663507 - 2² = 11663503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11663507.

It is not an unprimeable number, because it can be changed into a prime (11663501) by changing a digit.

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, 253532 + ... + 253577.

It is an arithmetic number, because the mean of its divisors is an integer number (3042660).

Almost surely, 2^11663507 is an apocalyptic number.

11663507 is a deficient number, since it is larger than the sum of its proper divisors (507133).

11663507 is an equidigital number, since it uses as much as digits as its factorization.

11663507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507132.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 11663507 is about 3415.1876961596. The cubic root of 11663507 is about 226.7825937659.

The spelling of 11663507 in words is "eleven million, six hundred sixty-three thousand, five hundred seven".