1170813 has 16 divisors (see below), whose sum is σ = 1802240. Its totient is φ = 662256.

The previous prime is 1170811. The next prime is 1170821. The reversal of 1170813 is 3180711.

It is not a de Polignac number, because 1170813 - 2¹ = 1170811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1170813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1170811) 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, 2448 + ... + 2886.

It is an arithmetic number, because the mean of its divisors is an integer number (112640).

2^1170813 is an apocalyptic number.

It is an amenable number.

1170813 is a deficient number, since it is larger than the sum of its proper divisors (631427).

1170813 is a wasteful number, since it uses less digits than its factorization.

1170813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 1170813 is about 1082.0411267600. The cubic root of 1170813 is about 105.3972255198.

The spelling of 1170813 in words is "one million, one hundred seventy thousand, eight hundred thirteen".