1663392 has 24 divisors (see below), whose sum is σ = 4366656. Its totient is φ = 554432.

The previous prime is 1663391. The next prime is 1663397. The reversal of 1663392 is 2933661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a plaindrome in base 15.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1663391) 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, 8568 + ... + 8759.

It is an arithmetic number, because the mean of its divisors is an integer number (181944).

2^1663392 is an apocalyptic number.

1663392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1663392 is an abundant number, since it is smaller than the sum of its proper divisors (2703264).

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

1663392 is a wasteful number, since it uses less digits than its factorization.

1663392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17340 (or 17332 counting only the distinct ones).

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

The square root of 1663392 is about 1289.7255522009. The cubic root of 1663392 is about 118.4854083050.

The spelling of 1663392 in words is "one million, six hundred sixty-three thousand, three hundred ninety-two".