11977071 has 4 divisors (see below), whose sum is σ = 15969432. Its totient is φ = 7984712.

The previous prime is 11977039. The next prime is 11977109. The reversal of 11977071 is 17077911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11977071 - 2⁵ = 11977039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11997071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1996176 + ... + 1996181.

It is an arithmetic number, because the mean of its divisors is an integer number (3992358).

Almost surely, 2^11977071 is an apocalyptic number.

11977071 is a deficient number, since it is larger than the sum of its proper divisors (3992361).

11977071 is an equidigital number, since it uses as much as digits as its factorization.

11977071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992360.

The product of its (nonzero) digits is 3087, while the sum is 33.

The square root of 11977071 is about 3460.7905166306. The cubic root of 11977071 is about 228.7969380224.

The spelling of 11977071 in words is "eleven million, nine hundred seventy-seven thousand, seventy-one".