11800655 has 4 divisors (see below), whose sum is σ = 14160792. Its totient is φ = 9440520.

The previous prime is 11800639. The next prime is 11800673. The reversal of 11800655 is 55600811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55600811 = 7 ⋅7942973.

It is not a de Polignac number, because 11800655 - 2⁴ = 11800639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1180061 + ... + 1180070.

It is an arithmetic number, because the mean of its divisors is an integer number (3540198).

Almost surely, 2^11800655 is an apocalyptic number.

11800655 is a deficient number, since it is larger than the sum of its proper divisors (2360137).

11800655 is an equidigital number, since it uses as much as digits as its factorization.

11800655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360136.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 11800655 is about 3435.2081450765. The cubic root of 11800655 is about 227.6680238419.

The spelling of 11800655 in words is "eleven million, eight hundred thousand, six hundred fifty-five".