1606145 has 8 divisors (see below), whose sum is σ = 1942080. Its totient is φ = 1275120.

The previous prime is 1606139. The next prime is 1606151. The reversal of 1606145 is 5416061.

It is an interprime number because it is at equal distance from previous prime (1606139) and next prime (1606151).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1606145 - 2⁶ = 1606081 is a prime.

It is a super-2 number, since 2×1606145² = 5159403522050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1606145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (242760).

2^1606145 is an apocalyptic number.

It is an amenable number.

1606145 is a deficient number, since it is larger than the sum of its proper divisors (335935).

1606145 is a wasteful number, since it uses less digits than its factorization.

1606145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1606145 is about 1267.3377608199. The cubic root of 1606145 is about 117.1102523207.

The spelling of 1606145 in words is "one million, six hundred six thousand, one hundred forty-five".