11663995 has 16 divisors (see below), whose sum is σ = 16109568. Its totient is φ = 7941600.

The previous prime is 11663983. The next prime is 11664017. The reversal of 11663995 is 59936611.

It is not a de Polignac number, because 11663995 - 2¹³ = 11655803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4182 + ... + 6388.

It is an arithmetic number, because the mean of its divisors is an integer number (1006848).

Almost surely, 2^11663995 is an apocalyptic number.

11663995 is a deficient number, since it is larger than the sum of its proper divisors (4445573).

11663995 is a wasteful number, since it uses less digits than its factorization.

11663995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370.

The product of its digits is 43740, while the sum is 40.

The square root of 11663995 is about 3415.2591409731. The cubic root of 11663995 is about 226.7857565757.

The spelling of 11663995 in words is "eleven million, six hundred sixty-three thousand, nine hundred ninety-five".