1872689 has 12 divisors (see below), whose sum is σ = 2318976. Its totient is φ = 1480752.

The previous prime is 1872671. The next prime is 1872691. The reversal of 1872689 is 9862781.

It is not a de Polignac number, because 1872689 - 2¹⁶ = 1807153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1872289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 392 + ... + 1974.

It is an arithmetic number, because the mean of its divisors is an integer number (193248).

2^1872689 is an apocalyptic number.

It is an amenable number.

1872689 is a deficient number, since it is larger than the sum of its proper divisors (446287).

1872689 is a wasteful number, since it uses less digits than its factorization.

1872689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616 (or 1603 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 1872689 is about 1368.4622756949. The cubic root of 1872689 is about 123.2599214118.

The spelling of 1872689 in words is "one million, eight hundred seventy-two thousand, six hundred eighty-nine".