11720863 has 8 divisors (see below), whose sum is σ = 14613120. Its totient is φ = 9133080.

The previous prime is 11720851. The next prime is 11720873. The reversal of 11720863 is 36802711.

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

It is a de Polignac number, because none of the positive numbers 2^k-11720863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11720873) 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, 76033 + ... + 76186.

It is an arithmetic number, because the mean of its divisors is an integer number (1826640).

Almost surely, 2^11720863 is an apocalyptic number.

11720863 is a deficient number, since it is larger than the sum of its proper divisors (2892257).

11720863 is a wasteful number, since it uses less digits than its factorization.

11720863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152237.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 11720863 is about 3423.5745939004. The cubic root of 11720863 is about 227.1537251087.

The spelling of 11720863 in words is "eleven million, seven hundred twenty thousand, eight hundred sixty-three".