1672545 has 32 divisors (see below), whose sum is σ = 3241728. Its totient is φ = 718848.

The previous prime is 1672529. The next prime is 1672549. The reversal of 1672545 is 5452761.

It is not a de Polignac number, because 1672545 - 2⁴ = 1672529 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1672549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1317 + ... + 2253.

It is an arithmetic number, because the mean of its divisors is an integer number (101304).

2^1672545 is an apocalyptic number.

1672545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1672545 is a deficient number, since it is larger than the sum of its proper divisors (1569183).

1672545 is a wasteful number, since it uses less digits than its factorization.

1672545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969.

The product of its digits is 8400, while the sum is 30.

The square root of 1672545 is about 1293.2691135259. The cubic root of 1672545 is about 118.7023372895.

The spelling of 1672545 in words is "one million, six hundred seventy-two thousand, five hundred forty-five".