1672864 has 24 divisors (see below), whose sum is σ = 3351348. Its totient is φ = 821760.

The previous prime is 1672861. The next prime is 1672873. The reversal of 1672864 is 4682761.

It can be written as a sum of positive squares in 2 ways, for example, as 1669264 + 3600 = 1292^2 + 60^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1524 + ... + 2380.

2^1672864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1672864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1675674).

1672864 is an abundant number, since it is smaller than the sum of its proper divisors (1678484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1672864 is an equidigital number, since it uses as much as digits as its factorization.

1672864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928 (or 920 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 1672864 is about 1293.3924385120. The cubic root of 1672864 is about 118.7098834021.

The spelling of 1672864 in words is "one million, six hundred seventy-two thousand, eight hundred sixty-four".