1661346 has 12 divisors (see below), whose sum is σ = 3599622. Its totient is φ = 553776.

The previous prime is 1661333. The next prime is 1661347. The reversal of 1661346 is 6431661.

1661346 is a `hidden beast` number, since 1 + 6 + 613 + 46 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1625625 + 35721 = 1275^2 + 189^2 .

It is not an unprimeable number, because it can be changed into a prime (1661347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46131 + ... + 46166.

2^1661346 is an apocalyptic number.

1661346 is an abundant number, since it is smaller than the sum of its proper divisors (1938276).

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

1661346 is a wasteful number, since it uses less digits than its factorization.

1661346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92305 (or 92302 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 1661346 is about 1288.9321161334. The cubic root of 1661346 is about 118.4368086950.

The spelling of 1661346 in words is "one million, six hundred sixty-one thousand, three hundred forty-six".