11780901 has 24 divisors (see below), whose sum is σ = 18729984. Its totient is φ = 7076160.

The previous prime is 11780897. The next prime is 11780903. The reversal of 11780901 is 10908711.

11780901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11780901 - 2² = 11780897 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11780903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12105 + ... + 13041.

It is an arithmetic number, because the mean of its divisors is an integer number (780416).

Almost surely, 2^11780901 is an apocalyptic number.

11780901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11780901 is a deficient number, since it is larger than the sum of its proper divisors (6949083).

11780901 is a wasteful number, since it uses less digits than its factorization.

11780901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 11780901 is about 3432.3317147385. The cubic root of 11780901 is about 227.5409160397.

It can be divided in two parts, 117 and 80901, that added together give a palindrome (81018).

The spelling of 11780901 in words is "eleven million, seven hundred eighty thousand, nine hundred one".