3631816 has 8 divisors (see below), whose sum is σ = 6809670. Its totient is φ = 1815904.

The previous prime is 3631813. The next prime is 3631841. The reversal of 3631816 is 6181363.

It can be written as a sum of positive squares in only one way, i.e., 3204100 + 427716 = 1790^2 + 654^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (3631811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226981 + ... + 226996.

Almost surely, 2^3631816 is an apocalyptic number.

It is an amenable number.

3631816 is a deficient number, since it is larger than the sum of its proper divisors (3177854).

3631816 is a wasteful number, since it uses less digits than its factorization.

3631816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453983 (or 453979 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 3631816 is about 1905.7324051398. The cubic root of 3631816 is about 153.7120610557.

The spelling of 3631816 in words is "three million, six hundred thirty-one thousand, eight hundred sixteen".