3709631 has 2 divisors, whose sum is σ = 3709632. Its totient is φ = 3709630.

The previous prime is 3709577. The next prime is 3709633. The reversal of 3709631 is 1369073.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3709631 is a prime.

It is a super-2 number, since 2×3709631² = 27522724312322, which contains 22 as substring.

Together with 3709633, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 3709594 and 3709603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3709633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1854815 + 1854816.

It is an arithmetic number, because the mean of its divisors is an integer number (1854816).

Almost surely, 2^3709631 is an apocalyptic number.

3709631 is a deficient number, since it is larger than the sum of its proper divisors (1).

3709631 is an equidigital number, since it uses as much as digits as its factorization.

3709631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 3709631 is about 1926.0402384166. The cubic root of 3709631 is about 154.8021200136.

It can be divided in two parts, 370 and 9631, that added together give a palindrome (10001).

The spelling of 3709631 in words is "three million, seven hundred nine thousand, six hundred thirty-one".