1660023 has 6 divisors (see below), whose sum is σ = 2397824. Its totient is φ = 1106676.

The previous prime is 1660007. The next prime is 1660037. The reversal of 1660023 is 3200661.

It is a happy number.

1660023 is a `hidden beast` number, since 1 + 660 + 0 + 2 + 3 = 666.

It is not a de Polignac number, because 1660023 - 2⁴ = 1660007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1659978 and 1660005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92215 + ... + 92232.

2^1660023 is an apocalyptic number.

1660023 is a deficient number, since it is larger than the sum of its proper divisors (737801).

1660023 is a wasteful number, since it uses less digits than its factorization.

1660023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184453 (or 184450 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1660023 is about 1288.4187983726. The cubic root of 1660023 is about 118.4053616013.

Adding to 1660023 its reverse (3200661), we get a palindrome (4860684).

The spelling of 1660023 in words is "one million, six hundred sixty thousand, twenty-three".