1640108 has 12 divisors (see below), whose sum is σ = 2879352. Its totient is φ = 817440.

The previous prime is 1640083. The next prime is 1640131. The reversal of 1640108 is 8010461.

It is a self number, because there is not a number n which added to its sum of digits gives 1640108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691 + ... + 2477.

It is an arithmetic number, because the mean of its divisors is an integer number (239946).

2^1640108 is an apocalyptic number.

It is an amenable number.

1640108 is a deficient number, since it is larger than the sum of its proper divisors (1239244).

1640108 is a wasteful number, since it uses less digits than its factorization.

1640108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1640108 is about 1280.6670137081. The cubic root of 1640108 is about 117.9299593922.

Adding to 1640108 its reverse (8010461), we get a palindrome (9650569).

The spelling of 1640108 in words is "one million, six hundred forty thousand, one hundred eight".