1863668 has 6 divisors (see below), whose sum is σ = 3261426. Its totient is φ = 931832.

The previous prime is 1863649. The next prime is 1863671. The reversal of 1863668 is 8663681.

It can be written as a sum of positive squares in only one way, i.e., 1304164 + 559504 = 1142^2 + 748^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232955 + ... + 232962.

It is an arithmetic number, because the mean of its divisors is an integer number (543571).

2^1863668 is an apocalyptic number.

It is an amenable number.

1863668 is a deficient number, since it is larger than the sum of its proper divisors (1397758).

1863668 is a wasteful number, since it uses less digits than its factorization.

1863668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465921 (or 465919 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 1863668 is about 1365.1622614180. The cubic root of 1863668 is about 123.0616827684.

The spelling of 1863668 in words is "one million, eight hundred sixty-three thousand, six hundred sixty-eight".