1663368 has 32 divisors (see below), whose sum is σ = 4752960. Its totient is φ = 475200.

The previous prime is 1663351. The next prime is 1663373. The reversal of 1663368 is 8633661.

1663368 = 62² + 63² + ... + 173².

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, 4783 + ... + 5118.

It is an arithmetic number, because the mean of its divisors is an integer number (148530).

2^1663368 is an apocalyptic number.

It is an amenable number.

1663368 is an abundant number, since it is smaller than the sum of its proper divisors (3089592).

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

1663368 is a wasteful number, since it uses less digits than its factorization.

1663368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9917 (or 9913 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 1663368 is about 1289.7162478623. The cubic root of 1663368 is about 118.4848384526.

The spelling of 1663368 in words is "one million, six hundred sixty-three thousand, three hundred sixty-eight".