1806723 has 12 divisors (see below), whose sum is σ = 2636400. Its totient is φ = 1192176.

The previous prime is 1806713. The next prime is 1806733. The reversal of 1806723 is 3276081.

It is an interprime number because it is at equal distance from previous prime (1806713) and next prime (1806733).

It is not a de Polignac number, because 1806723 - 2¹⁴ = 1790339 is a prime.

1806723 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1806703) 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, 48 + ... + 1901.

It is an arithmetic number, because the mean of its divisors is an integer number (219700).

2^1806723 is an apocalyptic number.

1806723 is a deficient number, since it is larger than the sum of its proper divisors (829677).

1806723 is a wasteful number, since it uses less digits than its factorization.

1806723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058 (or 2055 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1806723 is about 1344.1439655037. The cubic root of 1806723 is about 121.7952985801.

It can be divided in two parts, 180 and 6723, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 1806723 in words is "one million, eight hundred six thousand, seven hundred twenty-three".