1646466 has 16 divisors (see below), whose sum is σ = 3318624. Its totient is φ = 544544.

The previous prime is 1646461. The next prime is 1646473. The reversal of 1646466 is 6646461.

It is not an unprimeable number, because it can be changed into a prime (1646461) 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, 180 + ... + 1823.

It is an arithmetic number, because the mean of its divisors is an integer number (207414).

2^1646466 is an apocalyptic number.

1646466 is an abundant number, since it is smaller than the sum of its proper divisors (1672158).

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

1646466 is a wasteful number, since it uses less digits than its factorization.

1646466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145.

The product of its digits is 20736, while the sum is 33.

The square root of 1646466 is about 1283.1469128670. The cubic root of 1646466 is about 118.0821509714.

It can be divided in two parts, 1646 and 466, that added together give a palindrome (2112).

The spelling of 1646466 in words is "one million, six hundred forty-six thousand, four hundred sixty-six".