1663932 has 12 divisors (see below), whose sum is σ = 3882536. Its totient is φ = 554640.

The previous prime is 1663919. The next prime is 1663951. The reversal of 1663932 is 2393661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 6 + 6⁵ + 3¹⁰ + 9³ + 3¹³ + 2¹¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 1663932.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69319 + ... + 69342.

2^1663932 is an apocalyptic number.

1663932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1663932 is an abundant number, since it is smaller than the sum of its proper divisors (2218604).

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

1663932 is a wasteful number, since it uses less digits than its factorization.

1663932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138668 (or 138666 counting only the distinct ones).

The product of its digits is 5832, while the sum is 30.

The square root of 1663932 is about 1289.9348820774. The cubic root of 1663932 is about 118.4982285338.

The spelling of 1663932 in words is "one million, six hundred sixty-three thousand, nine hundred thirty-two".