11980755 has 12 divisors (see below), whose sum is σ = 20766720. Its totient is φ = 6389712.

The previous prime is 11980693. The next prime is 11980763. The reversal of 11980755 is 55708911.

It is not a de Polignac number, because 11980755 - 2⁶ = 11980691 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133075 + ... + 133164.

It is an arithmetic number, because the mean of its divisors is an integer number (1730560).

Almost surely, 2^11980755 is an apocalyptic number.

11980755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11980755 is a deficient number, since it is larger than the sum of its proper divisors (8785965).

11980755 is a wasteful number, since it uses less digits than its factorization.

11980755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266250 (or 266247 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The square root of 11980755 is about 3461.3227240464. The cubic root of 11980755 is about 228.8203939941.

The spelling of 11980755 in words is "eleven million, nine hundred eighty thousand, seven hundred fifty-five".