1672447 has 4 divisors (see below), whose sum is σ = 1911376. Its totient is φ = 1433520.

The previous prime is 1672441. The next prime is 1672453. The reversal of 1672447 is 7442761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7442761 = 691 ⋅10771.

It is an interprime number because it is at equal distance from previous prime (1672441) and next prime (1672453).

It is a cyclic number.

It is not a de Polignac number, because 1672447 - 2¹¹ = 1670399 is a prime.

It is a Duffinian number.

1672447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672441) 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 3 ways as a sum of consecutive naturals, for example, 119454 + ... + 119467.

It is an arithmetic number, because the mean of its divisors is an integer number (477844).

2^1672447 is an apocalyptic number.

1672447 is a deficient number, since it is larger than the sum of its proper divisors (238929).

1672447 is an equidigital number, since it uses as much as digits as its factorization.

1672447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238928.

The product of its digits is 9408, while the sum is 31.

The square root of 1672447 is about 1293.2312244916. The cubic root of 1672447 is about 118.7000188554.

The spelling of 1672447 in words is "one million, six hundred seventy-two thousand, four hundred forty-seven".