1656012 has 24 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 542416.

The previous prime is 1656007. The next prime is 1656013. The reversal of 1656012 is 2106561.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1656012.

It is not an unprimeable number, because it can be changed into a prime (1656013) 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, 462 + ... + 1877.

It is an arithmetic number, because the mean of its divisors is an integer number (163800).

2^1656012 is an apocalyptic number.

1656012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1656012 is an abundant number, since it is smaller than the sum of its proper divisors (2275188).

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

1656012 is a wasteful number, since it uses less digits than its factorization.

1656012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2403 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1656012 is about 1286.8612978872. The cubic root of 1656012 is about 118.3099197654.

The spelling of 1656012 in words is "one million, six hundred fifty-six thousand, twelve".