1641764 has 12 divisors (see below), whose sum is σ = 2951004. Its totient is φ = 798624.

The previous prime is 1641751. The next prime is 1641797. The reversal of 1641764 is 4671461.

It can be written as a sum of positive squares in 2 ways, for example, as 1420864 + 220900 = 1192^2 + 470^2 .

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5399 + ... + 5694.

It is an arithmetic number, because the mean of its divisors is an integer number (245917).

2^1641764 is an apocalyptic number.

It is an amenable number.

1641764 is a deficient number, since it is larger than the sum of its proper divisors (1309240).

1641764 is a wasteful number, since it uses less digits than its factorization.

1641764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11134 (or 11132 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 1641764 is about 1281.3133886759. The cubic root of 1641764 is about 117.9696369259.

The spelling of 1641764 in words is "one million, six hundred forty-one thousand, seven hundred sixty-four".