1663632 has 40 divisors (see below), whose sum is σ = 4776480. Its totient is φ = 554400.

The previous prime is 1663619. The next prime is 1663681. The reversal of 1663632 is 2363661.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1663596 and 1663605.

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, 1494 + ... + 2357.

It is an arithmetic number, because the mean of its divisors is an integer number (119412).

2^1663632 is an apocalyptic number.

1663632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1663632 is an abundant number, since it is smaller than the sum of its proper divisors (3112848).

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

1663632 is a wasteful number, since it uses less digits than its factorization.

1663632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3868 (or 3856 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 1663632 is about 1289.8185918958. The cubic root of 1663632 is about 118.4911065269.

1663632 divided by its sum of digits (27) gives a palindrome (61616).

The spelling of 1663632 in words is "one million, six hundred sixty-three thousand, six hundred thirty-two".