11970861 has 8 divisors (see below), whose sum is σ = 18241344. Its totient is φ = 6840480.

The previous prime is 11970857. The next prime is 11970877. The reversal of 11970861 is 16807911.

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

It is not a de Polignac number, because 11970861 - 2² = 11970857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11970821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285000 + ... + 285041.

It is an arithmetic number, because the mean of its divisors is an integer number (2280168).

Almost surely, 2^11970861 is an apocalyptic number.

It is an amenable number.

11970861 is a deficient number, since it is larger than the sum of its proper divisors (6270483).

11970861 is an equidigital number, since it uses as much as digits as its factorization.

11970861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570051.

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 11970861 is about 3459.8932064444. The cubic root of 11970861 is about 228.7573881576.

The spelling of 11970861 in words is "eleven million, nine hundred seventy thousand, eight hundred sixty-one".