1671944 has 8 divisors (see below), whose sum is σ = 3134910. Its totient is φ = 835968.

The previous prime is 1671941. The next prime is 1671947. The reversal of 1671944 is 4491761.

It is an interprime number because it is at equal distance from previous prime (1671941) and next prime (1671947).

It can be written as a sum of positive squares in only one way, i.e., 879844 + 792100 = 938^2 + 890^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1671944.

It is not an unprimeable number, because it can be changed into a prime (1671941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104489 + ... + 104504.

2^1671944 is an apocalyptic number.

It is an amenable number.

1671944 is a deficient number, since it is larger than the sum of its proper divisors (1462966).

1671944 is a wasteful number, since it uses less digits than its factorization.

1671944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208999 (or 208995 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 1671944 is about 1293.0367357504. The cubic root of 1671944 is about 118.6881177117.

The spelling of 1671944 in words is "one million, six hundred seventy-one thousand, nine hundred forty-four".