1641407 has 2 divisors, whose sum is σ = 1641408. Its totient is φ = 1641406.

The previous prime is 1641403. The next prime is 1641457. The reversal of 1641407 is 7041461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1641407 - 2² = 1641403 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820703 + 820704.

It is an arithmetic number, because the mean of its divisors is an integer number (820704).

2^1641407 is an apocalyptic number.

1641407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641407 is an equidigital number, since it uses as much as digits as its factorization.

1641407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1641407 is about 1281.1740709209. The cubic root of 1641407 is about 117.9610855114.

Adding to 1641407 its reverse (7041461), we get a palindrome (8682868).

It can be divided in two parts, 1641 and 407, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1641407 in words is "one million, six hundred forty-one thousand, four hundred seven".