11663693 has 4 divisors (see below), whose sum is σ = 11741088. Its totient is φ = 11586300.

The previous prime is 11663669. The next prime is 11663723. The reversal of 11663693 is 39636611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39636611 = 7 ⋅5662373.

It is a cyclic number.

It is not a de Polignac number, because 11663693 - 2⁸ = 11663437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11663633) 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, 38471 + ... + 38772.

It is an arithmetic number, because the mean of its divisors is an integer number (2935272).

Almost surely, 2^11663693 is an apocalyptic number.

It is an amenable number.

11663693 is a deficient number, since it is larger than the sum of its proper divisors (77395).

11663693 is an equidigital number, since it uses as much as digits as its factorization.

11663693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77394.

The product of its digits is 17496, while the sum is 35.

The square root of 11663693 is about 3415.2149273508. The cubic root of 11663693 is about 226.7837992735.

The spelling of 11663693 in words is "eleven million, six hundred sixty-three thousand, six hundred ninety-three".