1641966 has 16 divisors (see below), whose sum is σ = 3298944. Its totient is φ = 544824.

The previous prime is 1641953. The next prime is 1641971. The reversal of 1641966 is 6691461.

It is a congruent number.

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, 1215 + ... + 2181.

It is an arithmetic number, because the mean of its divisors is an integer number (206184).

2^1641966 is an apocalyptic number.

1641966 is an abundant number, since it is smaller than the sum of its proper divisors (1656978).

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

1641966 is a wasteful number, since it uses less digits than its factorization.

1641966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255.

The product of its digits is 7776, while the sum is 33.

The square root of 1641966 is about 1281.3922116198. The cubic root of 1641966 is about 117.9744749923.

The spelling of 1641966 in words is "one million, six hundred forty-one thousand, nine hundred sixty-six".