1115671 has 4 divisors (see below), whose sum is σ = 1118232. Its totient is φ = 1113112.

The previous prime is 1115657. The next prime is 1115683. The reversal of 1115671 is 1765111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1765111 = 103 ⋅17137.

It is a cyclic number.

It is not a de Polignac number, because 1115671 - 2¹³ = 1107479 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1115671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115641) 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, 445 + ... + 1558.

It is an arithmetic number, because the mean of its divisors is an integer number (279558).

2^1115671 is an apocalyptic number.

1115671 is a deficient number, since it is larger than the sum of its proper divisors (2561).

1115671 is an equidigital number, since it uses as much as digits as its factorization.

1115671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560.

The product of its digits is 210, while the sum is 22.

The square root of 1115671 is about 1056.2532840186. The cubic root of 1115671 is about 103.7159098334.

The spelling of 1115671 in words is "one million, one hundred fifteen thousand, six hundred seventy-one".