1661466 has 16 divisors (see below), whose sum is σ = 3373344. Its totient is φ = 545424.

The previous prime is 1661447. The next prime is 1661479. The reversal of 1661466 is 6641661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1665 + ... + 2468.

It is an arithmetic number, because the mean of its divisors is an integer number (210834).

2^1661466 is an apocalyptic number.

1661466 is an abundant number, since it is smaller than the sum of its proper divisors (1711878).

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

1661466 is a wasteful number, since it uses less digits than its factorization.

1661466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205.

The product of its digits is 5184, while the sum is 30.

The square root of 1661466 is about 1288.9786654557. The cubic root of 1661466 is about 118.4396602131.

The spelling of 1661466 in words is "one million, six hundred sixty-one thousand, four hundred sixty-six".