1445605 has 16 divisors (see below), whose sum is σ = 2006784. Its totient is φ = 979200.

The previous prime is 1445599. The next prime is 1445657. The reversal of 1445605 is 5065441.

It is not a de Polignac number, because 1445605 - 2¹¹ = 1443557 is a prime.

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 1445605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3405 + ... + 3805.

It is an arithmetic number, because the mean of its divisors is an integer number (125424).

2^1445605 is an apocalyptic number.

It is an amenable number.

1445605 is a deficient number, since it is larger than the sum of its proper divisors (561179).

1445605 is a wasteful number, since it uses less digits than its factorization.

1445605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1445605 is about 1202.3331485075. Note that the first 3 decimals coincide. The cubic root of 1445605 is about 113.0706478622.

It can be divided in two parts, 1445 and 605, that multiplied together give a square (874225 = 935²).

The spelling of 1445605 in words is "one million, four hundred forty-five thousand, six hundred five".