6355631 has 2 divisors, whose sum is σ = 6355632. Its totient is φ = 6355630.

The previous prime is 6355621. The next prime is 6355667. The reversal of 6355631 is 1365536.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6355631 is a prime.

It is a super-2 number, since 2×6355631² = 80788090816322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6355594 and 6355603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6355621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3177815 + 3177816.

It is an arithmetic number, because the mean of its divisors is an integer number (3177816).

Almost surely, 2^6355631 is an apocalyptic number.

6355631 is a deficient number, since it is larger than the sum of its proper divisors (1).

6355631 is an equidigital number, since it uses as much as digits as its factorization.

6355631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 29.

The square root of 6355631 is about 2521.0376831773. The cubic root of 6355631 is about 185.2335108314.

The spelling of 6355631 in words is "six million, three hundred fifty-five thousand, six hundred thirty-one".