3663897 has 4 divisors (see below), whose sum is σ = 4885200. Its totient is φ = 2442596.

The previous prime is 3663893. The next prime is 3663899. The reversal of 3663897 is 7983663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7983663 = 3 ⋅2661221.

It is a cyclic number.

It is not a de Polignac number, because 3663897 - 2² = 3663893 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3663893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610647 + ... + 610652.

It is an arithmetic number, because the mean of its divisors is an integer number (1221300).

Almost surely, 2^3663897 is an apocalyptic number.

It is an amenable number.

3663897 is a deficient number, since it is larger than the sum of its proper divisors (1221303).

3663897 is a wasteful number, since it uses less digits than its factorization.

3663897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221302.

The product of its digits is 163296, while the sum is 42.

The square root of 3663897 is about 1914.1308732686. The cubic root of 3663897 is about 154.1633309562.

It can be divided in two parts, 3663 and 897, that added together give a triangular number (4560 = T₉₅).

The spelling of 3663897 in words is "three million, six hundred sixty-three thousand, eight hundred ninety-seven".