3654216 has 24 divisors (see below), whose sum is σ = 9897030. Its totient is φ = 1218048.

The previous prime is 3654199. The next prime is 3654227. The reversal of 3654216 is 6124563.

3654216 is a `hidden beast` number, since 3 + 654 + 2 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2340900 + 1313316 = 1530^2 + 1146^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3654216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25305 + ... + 25448.

Almost surely, 2^3654216 is an apocalyptic number.

3654216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3654216 is an abundant number, since it is smaller than the sum of its proper divisors (6242814).

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

3654216 is a wasteful number, since it uses less digits than its factorization.

3654216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50765 (or 50758 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 3654216 is about 1911.6003766478. The cubic root of 3654216 is about 154.0274308813.

Adding to 3654216 its reverse (6124563), we get a palindrome (9778779).

The spelling of 3654216 in words is "three million, six hundred fifty-four thousand, two hundred sixteen".