11649863 has 8 divisors (see below), whose sum is σ = 12020400. Its totient is φ = 11283520.

The previous prime is 11649853. The next prime is 11649881. The reversal of 11649863 is 36894611.

11649863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11649863 is a prime.

It is a super-3 number, since 3×11649863³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11649823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5156 + ... + 7062.

It is an arithmetic number, because the mean of its divisors is an integer number (1502550).

Almost surely, 2^11649863 is an apocalyptic number.

11649863 is a deficient number, since it is larger than the sum of its proper divisors (370537).

11649863 is a wasteful number, since it uses less digits than its factorization.

11649863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097.

The product of its digits is 31104, while the sum is 38.

The square root of 11649863 is about 3413.1895640295. The cubic root of 11649863 is about 226.6941289775.

The spelling of 11649863 in words is "eleven million, six hundred forty-nine thousand, eight hundred sixty-three".