1664230 has 16 divisors (see below), whose sum is σ = 3016944. Its totient is φ = 660960.

The previous prime is 1664227. The next prime is 1664251. The reversal of 1664230 is 324661.

It is a super-2 number, since 2×1664230² = 5539322985800, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1120 + ... + 2140.

It is an arithmetic number, because the mean of its divisors is an integer number (188559).

2^1664230 is an apocalyptic number.

1664230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1664230 is a deficient number, since it is larger than the sum of its proper divisors (1352714).

1664230 is a wasteful number, since it uses less digits than its factorization.

1664230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1664230 is about 1290.0503866129. The cubic root of 1664230 is about 118.5053022131.

Adding to 1664230 its reverse (324661), we get a palindrome (1988891).

It can be divided in two parts, 16 and 64230, that added together give a palindrome (64246).

The spelling of 1664230 in words is "one million, six hundred sixty-four thousand, two hundred thirty".