1671045 has 16 divisors (see below), whose sum is σ = 2702592. Its totient is φ = 881600.

The previous prime is 1671041. The next prime is 1671053. The reversal of 1671045 is 5401761.

It is not a de Polignac number, because 1671045 - 2² = 1671041 is a prime.

It is a Curzon number.

1671045 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671041) 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 in 15 ways as a sum of consecutive naturals, for example, 964 + ... + 2066.

It is an arithmetic number, because the mean of its divisors is an integer number (168912).

2^1671045 is an apocalyptic number.

1671045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1671045 is a deficient number, since it is larger than the sum of its proper divisors (1031547).

1671045 is a wasteful number, since it uses less digits than its factorization.

1671045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 1671045 is about 1292.6890577397. The cubic root of 1671045 is about 118.6668411323. Note that the first 3 decimals are identical.

The spelling of 1671045 in words is "one million, six hundred seventy-one thousand, forty-five".