11571967 has 16 divisors (see below), whose sum is σ = 13436928. Its totient is φ = 9861280.

The previous prime is 11571949. The next prime is 11571983. The reversal of 11571967 is 76917511.

It is not a de Polignac number, because 11571967 - 2⁷ = 11571839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11571467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12978 + ... + 13840.

It is an arithmetic number, because the mean of its divisors is an integer number (839808).

Almost surely, 2^11571967 is an apocalyptic number.

11571967 is a deficient number, since it is larger than the sum of its proper divisors (1864961).

11571967 is a wasteful number, since it uses less digits than its factorization.

11571967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950.

The product of its digits is 13230, while the sum is 37.

The square root of 11571967 is about 3401.7593977235. The cubic root of 11571967 is about 226.1877404669.

The spelling of 11571967 in words is "eleven million, five hundred seventy-one thousand, nine hundred sixty-seven".