1640341 has 8 divisors (see below), whose sum is σ = 1683000. Its totient is φ = 1598400.

The previous prime is 1640333. The next prime is 1640393. The reversal of 1640341 is 1430461.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 476100 + 1164241 = 690^2 + 1079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1640341 - 2³ = 1640333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10935 + ... + 11083.

It is an arithmetic number, because the mean of its divisors is an integer number (210375).

2^1640341 is an apocalyptic number.

It is an amenable number.

1640341 is a deficient number, since it is larger than the sum of its proper divisors (42659).

1640341 is a wasteful number, since it uses less digits than its factorization.

1640341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1640341 is about 1280.7579786986. The cubic root of 1640341 is about 117.9355436544.

The spelling of 1640341 in words is "one million, six hundred forty thousand, three hundred forty-one".