1663018 has 8 divisors (see below), whose sum is σ = 2850912. Its totient is φ = 712716.

The previous prime is 1663009. The next prime is 1663027. The reversal of 1663018 is 8103661.

It is an interprime number because it is at equal distance from previous prime (1663009) and next prime (1663027).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1662983 and 1663001.

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, 59380 + ... + 59407.

It is an arithmetic number, because the mean of its divisors is an integer number (356364).

2^1663018 is an apocalyptic number.

1663018 is a deficient number, since it is larger than the sum of its proper divisors (1187894).

1663018 is a wasteful number, since it uses less digits than its factorization.

1663018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118796.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1663018 is about 1289.5805519625. The cubic root of 1663018 is about 118.4765274831.

Adding to 1663018 its reverse (8103661), we get a palindrome (9766679).

The spelling of 1663018 in words is "one million, six hundred sixty-three thousand, eighteen".