1660002 has 24 divisors (see below), whose sum is σ = 3477264. Its totient is φ = 528264.

The previous prime is 1659997. The next prime is 1660007. The reversal of 1660002 is 2000661.

It is an interprime number because it is at equal distance from previous prime (1659997) and next prime (1660007).

It is not an unprimeable number, because it can be changed into a prime (1660007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2913 + ... + 3435.

It is an arithmetic number, because the mean of its divisors is an integer number (144886).

2^1660002 is an apocalyptic number.

1660002 is an abundant number, since it is smaller than the sum of its proper divisors (1817262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1660002 is a wasteful number, since it uses less digits than its factorization.

1660002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1660002 is about 1288.4106488228. The cubic root of 1660002 is about 118.4048623064.

Adding to 1660002 its reverse (2000661), we get a palindrome (3660663).

The spelling of 1660002 in words is "one million, six hundred sixty thousand, two".