1673445 has 16 divisors (see below), whose sum is σ = 2770560. Its totient is φ = 861504.

The previous prime is 1673437. The next prime is 1673447. The reversal of 1673445 is 5443761.

It is not a de Polignac number, because 1673445 - 2³ = 1673437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1489 + ... + 2358.

It is an arithmetic number, because the mean of its divisors is an integer number (173160).

2^1673445 is an apocalyptic number.

1673445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1673445 is a deficient number, since it is larger than the sum of its proper divisors (1097115).

1673445 is a wasteful number, since it uses less digits than its factorization.

1673445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884.

The product of its digits is 10080, while the sum is 30.

The square root of 1673445 is about 1293.6170221515. The cubic root of 1673445 is about 118.7236247979.

The spelling of 1673445 in words is "one million, six hundred seventy-three thousand, four hundred forty-five".