1608745 has 16 divisors (see below), whose sum is σ = 2032128. Its totient is φ = 1221120.

The previous prime is 1608743. The next prime is 1608751. The reversal of 1608745 is 5478061.

It is not a de Polignac number, because 1608745 - 2¹ = 1608743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1608743) 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, 14982 + ... + 15088.

It is an arithmetic number, because the mean of its divisors is an integer number (127008).

2^1608745 is an apocalyptic number.

It is an amenable number.

1608745 is a deficient number, since it is larger than the sum of its proper divisors (423383).

1608745 is a wasteful number, since it uses less digits than its factorization.

1608745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1608745 is about 1268.3631183537. The cubic root of 1608745 is about 117.1734102764.

The spelling of 1608745 in words is "one million, six hundred eight thousand, seven hundred forty-five".