11663923 has 2 divisors, whose sum is σ = 11663924. Its totient is φ = 11663922.

The previous prime is 11663909. The next prime is 11663933. The reversal of 11663923 is 32936611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11663923 - 2¹³ = 11655731 is a prime.

It is a super-3 number, since 3×11663923³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11663933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831961 + 5831962.

It is an arithmetic number, because the mean of its divisors is an integer number (5831962).

Almost surely, 2^11663923 is an apocalyptic number.

11663923 is a deficient number, since it is larger than the sum of its proper divisors (1).

11663923 is an equidigital number, since it uses as much as digits as its factorization.

11663923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 31.

The square root of 11663923 is about 3415.2486000290. The cubic root of 11663923 is about 226.7852899372.

The spelling of 11663923 in words is "eleven million, six hundred sixty-three thousand, nine hundred twenty-three".