11660571 has 32 divisors (see below), whose sum is σ = 18816000. Its totient is φ = 7094304.

The previous prime is 11660567. The next prime is 11660573. The reversal of 11660571 is 17506611.

It is not a de Polignac number, because 11660571 - 2² = 11660567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11660573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48670 + ... + 48908.

It is an arithmetic number, because the mean of its divisors is an integer number (588000).

Almost surely, 2^11660571 is an apocalyptic number.

11660571 is a deficient number, since it is larger than the sum of its proper divisors (7155429).

11660571 is a wasteful number, since it uses less digits than its factorization.

11660571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 11660571 is about 3414.7578245023. The cubic root of 11660571 is about 226.7635631955.

The spelling of 11660571 in words is "eleven million, six hundred sixty thousand, five hundred seventy-one".