1641069 has 6 divisors (see below), whose sum is σ = 2370446. Its totient is φ = 1094040.

The previous prime is 1641053. The next prime is 1641077. The reversal of 1641069 is 9601461.

It can be written as a sum of positive squares in only one way, i.e., 980100 + 660969 = 990^2 + 813^2 .

It is not a de Polignac number, because 1641069 - 2⁴ = 1641053 is a prime.

It is a super-2 number, since 2×1641069² = 5386214925522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641089) 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, 91162 + ... + 91179.

2^1641069 is an apocalyptic number.

It is an amenable number.

1641069 is a deficient number, since it is larger than the sum of its proper divisors (729377).

1641069 is a wasteful number, since it uses less digits than its factorization.

1641069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182347 (or 182344 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1641069 is about 1281.0421538732. The cubic root of 1641069 is about 117.9529880715.

The spelling of 1641069 in words is "one million, six hundred forty-one thousand, sixty-nine".