3687331 has 4 divisors (see below), whose sum is σ = 3697200. Its totient is φ = 3677464.

The previous prime is 3687319. The next prime is 3687373. The reversal of 3687331 is 1337863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1337863 = 983 ⋅1361.

It is a cyclic number.

It is not a de Polignac number, because 3687331 - 2¹³ = 3679139 is a prime.

It is a super-2 number, since 2×3687331² = 27192819807122, which contains 22 as substring.

It is a Duffinian number.

3687331 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3687293 and 3687302.

It is not an unprimeable number, because it can be changed into a prime (3687301) 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, 4351 + ... + 5128.

It is an arithmetic number, because the mean of its divisors is an integer number (924300).

Almost surely, 2^3687331 is an apocalyptic number.

3687331 is a deficient number, since it is larger than the sum of its proper divisors (9869).

3687331 is an equidigital number, since it uses as much as digits as its factorization.

3687331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9868.

The product of its digits is 9072, while the sum is 31.

The square root of 3687331 is about 1920.2424326110. The cubic root of 3687331 is about 154.4913049362.

The spelling of 3687331 in words is "three million, six hundred eighty-seven thousand, three hundred thirty-one".