1608987 has 8 divisors (see below), whose sum is σ = 2153536. Its totient is φ = 1068552.

The previous prime is 1608979. The next prime is 1609009. The reversal of 1608987 is 7898061.

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

It is not a de Polignac number, because 1608987 - 2³ = 1608979 is a prime.

It is a Duffinian number.

1608987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1608487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48 + ... + 1794.

It is an arithmetic number, because the mean of its divisors is an integer number (269192).

2^1608987 is an apocalyptic number.

1608987 is a deficient number, since it is larger than the sum of its proper divisors (544549).

1608987 is a wasteful number, since it uses less digits than its factorization.

1608987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 1608987 is about 1268.4585133145. The cubic root of 1608987 is about 117.1792853620.

The spelling of 1608987 in words is "one million, six hundred eight thousand, nine hundred eighty-seven".