1663892 has 12 divisors (see below), whose sum is σ = 3083220. Its totient is φ = 782976.

The previous prime is 1663891. The next prime is 1663913. The reversal of 1663892 is 2983661.

It can be written as a sum of positive squares in 2 ways, for example, as 749956 + 913936 = 866^2 + 956^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12167 + ... + 12302.

It is an arithmetic number, because the mean of its divisors is an integer number (256935).

2^1663892 is an apocalyptic number.

It is an amenable number.

1663892 is a deficient number, since it is larger than the sum of its proper divisors (1419328).

1663892 is a wasteful number, since it uses less digits than its factorization.

1663892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24490 (or 24488 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 1663892 is about 1289.9193773256. The cubic root of 1663892 is about 118.4972789823.

The spelling of 1663892 in words is "one million, six hundred sixty-three thousand, eight hundred ninety-two".