3680631 has 6 divisors (see below), whose sum is σ = 5316480. Its totient is φ = 2453748.

The previous prime is 3680627. The next prime is 3680639. The reversal of 3680631 is 1360863.

It is not a de Polignac number, because 3680631 - 2² = 3680627 is a prime.

It is a super-2 number, since 2×3680631² = 27094089116322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3680595 and 3680604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3680639) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204471 + ... + 204488.

It is an arithmetic number, because the mean of its divisors is an integer number (886080).

Almost surely, 2^3680631 is an apocalyptic number.

3680631 is a deficient number, since it is larger than the sum of its proper divisors (1635849).

3680631 is a wasteful number, since it uses less digits than its factorization.

3680631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408965 (or 408962 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3680631 is about 1918.4970680197. The cubic root of 3680631 is about 154.3976763009.

The spelling of 3680631 in words is "three million, six hundred eighty thousand, six hundred thirty-one".