6413663 has 2 divisors, whose sum is σ = 6413664. Its totient is φ = 6413662.

The previous prime is 6413653. The next prime is 6413677. The reversal of 6413663 is 3663146.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6413663 is a prime.

It is a super-2 number, since 2×6413663² = 82270146155138, which contains 22 as substring.

It is a Sophie Germain prime.

It is an Ulam number.

It is equal to p₄₃₉₂₇₄ and since 6413663 and 439274 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6413653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3206831 + 3206832.

It is an arithmetic number, because the mean of its divisors is an integer number (3206832).

Almost surely, 2^6413663 is an apocalyptic number.

6413663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6413663 is an equidigital number, since it uses as much as digits as its factorization.

6413663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 29.

The square root of 6413663 is about 2532.5210759241. The cubic root of 6413663 is about 185.7955803289.

The spelling of 6413663 in words is "six million, four hundred thirteen thousand, six hundred sixty-three".