6131663 has 2 divisors, whose sum is σ = 6131664. Its totient is φ = 6131662.

The previous prime is 6131651. The next prime is 6131669. The reversal of 6131663 is 3661316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6131663 - 2¹² = 6127567 is a prime.

It is a super-2 number, since 2×6131663² = 75194582291138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6131669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3065831 + 3065832.

It is an arithmetic number, because the mean of its divisors is an integer number (3065832).

Almost surely, 2^6131663 is an apocalyptic number.

6131663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6131663 is an equidigital number, since it uses as much as digits as its factorization.

6131663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

The square root of 6131663 is about 2476.2194975406. The cubic root of 6131663 is about 183.0316069109.

Adding to 6131663 its reverse (3661316), we get a palindrome (9792979).

The spelling of 6131663 in words is "six million, one hundred thirty-one thousand, six hundred sixty-three".