3630686 has 4 divisors (see below), whose sum is σ = 5446032. Its totient is φ = 1815342.

The previous prime is 3630667. The next prime is 3630701. The reversal of 3630686 is 6860363.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6860363 = 1231 ⋅5573.

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, 907670 + ... + 907673.

It is an arithmetic number, because the mean of its divisors is an integer number (1361508).

Almost surely, 2^3630686 is an apocalyptic number.

3630686 is a deficient number, since it is larger than the sum of its proper divisors (1815346).

3630686 is a wasteful number, since it uses less digits than its factorization.

3630686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815345.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 3630686 is about 1905.4359081323. The cubic root of 3630686 is about 153.6961174574.

The spelling of 3630686 in words is "three million, six hundred thirty thousand, six hundred eighty-six".