1145605 has 16 divisors (see below), whose sum is σ = 1497600. Its totient is φ = 838080.

The previous prime is 1145593. The next prime is 1145611. The reversal of 1145605 is 5065411.

It is not a de Polignac number, because 1145605 - 2⁹ = 1145093 is a prime.

1145605 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2751 + ... + 3139.

It is an arithmetic number, because the mean of its divisors is an integer number (93600).

2^1145605 is an apocalyptic number.

It is an amenable number.

1145605 is a deficient number, since it is larger than the sum of its proper divisors (351995).

1145605 is a wasteful number, since it uses less digits than its factorization.

1145605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1145605 is about 1070.3293885529. The cubic root of 1145605 is about 104.6353183918.

The spelling of 1145605 in words is "one million, one hundred forty-five thousand, six hundred five".