1663172 has 12 divisors (see below), whose sum is σ = 3326400. Its totient is φ = 712776.

The previous prime is 1663169. The next prime is 1663183. The reversal of 1663172 is 2713661.

1663172 is an admirable number.

It is a super-2 number, since 2×1663172² = 5532282203168, which contains 22 as substring.

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, 29672 + ... + 29727.

It is an arithmetic number, because the mean of its divisors is an integer number (277200).

2^1663172 is an apocalyptic number.

It is an amenable number.

1663172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1663172 is a wasteful number, since it uses less digits than its factorization.

1663172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59410 (or 59408 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 1663172 is about 1289.6402599175. The cubic root of 1663172 is about 118.4801844533.

The spelling of 1663172 in words is "one million, six hundred sixty-three thousand, one hundred seventy-two".