1164609 has 6 divisors (see below), whose sum is σ = 1682226. Its totient is φ = 776400.

The previous prime is 1164607. The next prime is 1164617. The reversal of 1164609 is 9064611.

1164609 is a `hidden beast` number, since 11 + 646 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 804609 + 360000 = 897^2 + 600^2 .

It is not a de Polignac number, because 1164609 - 2¹ = 1164607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1164607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64692 + ... + 64709.

It is an arithmetic number, because the mean of its divisors is an integer number (280371).

2^1164609 is an apocalyptic number.

It is an amenable number.

1164609 is a deficient number, since it is larger than the sum of its proper divisors (517617).

1164609 is a wasteful number, since it uses less digits than its factorization.

1164609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129407 (or 129404 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1164609 is about 1079.1705147937. The cubic root of 1164609 is about 105.2107332416.

It can be divided in two parts, 11 and 64609, that added together give a triangular number (64620 = T₃₅₉).

The spelling of 1164609 in words is "one million, one hundred sixty-four thousand, six hundred nine".