1664232 has 32 divisors (see below), whose sum is σ = 4406400. Its totient is φ = 521984.

The previous prime is 1664227. The next prime is 1664251. The reversal of 1664232 is 2324661.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1632 + ... + 2447.

It is an arithmetic number, because the mean of its divisors is an integer number (137700).

2^1664232 is an apocalyptic number.

1664232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1664232 is an abundant number, since it is smaller than the sum of its proper divisors (2742168).

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

1664232 is a wasteful number, since it uses less digits than its factorization.

1664232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105 (or 4101 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 1664232 is about 1290.0511617762. The cubic root of 1664232 is about 118.5053496846.

Adding to 1664232 its reverse (2324661), we get a palindrome (3988893).

The spelling of 1664232 in words is "one million, six hundred sixty-four thousand, two hundred thirty-two".