11980705 has 16 divisors (see below), whose sum is σ = 15945408. Its totient is φ = 8568000.

The previous prime is 11980693. The next prime is 11980763. The reversal of 11980705 is 50708911.

It is not a de Polignac number, because 11980705 - 2⁵ = 11980673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1570 + ... + 5140.

It is an arithmetic number, because the mean of its divisors is an integer number (996588).

Almost surely, 2^11980705 is an apocalyptic number.

It is an amenable number.

11980705 is a deficient number, since it is larger than the sum of its proper divisors (3964703).

11980705 is a wasteful number, since it uses less digits than its factorization.

11980705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3648.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 11980705 is about 3461.3155013665. The cubic root of 11980705 is about 228.8200756770.

The spelling of 11980705 in words is "eleven million, nine hundred eighty thousand, seven hundred five".