1608645 has 8 divisors (see below), whose sum is σ = 2573856. Its totient is φ = 857936.

The previous prime is 1608637. The next prime is 1608653. The reversal of 1608645 is 5468061.

It is an interprime number because it is at equal distance from previous prime (1608637) and next prime (1608653).

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

It is a cyclic number.

It is not a de Polignac number, because 1608645 - 2³ = 1608637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53607 + ... + 53636.

It is an arithmetic number, because the mean of its divisors is an integer number (321732).

2^1608645 is an apocalyptic number.

1608645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1608645 is a deficient number, since it is larger than the sum of its proper divisors (965211).

1608645 is a wasteful number, since it uses less digits than its factorization.

1608645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107251.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1608645 is about 1268.3236968534. The cubic root of 1608645 is about 117.1709823831.

The spelling of 1608645 in words is "one million, six hundred eight thousand, six hundred forty-five".