127644463 has 2 divisors, whose sum is σ = 127644464. Its totient is φ = 127644462.

The previous prime is 127644437. The next prime is 127644481. The reversal of 127644463 is 364446721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127644463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127644493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63822231 + 63822232.

It is an arithmetic number, because the mean of its divisors is an integer number (63822232).

Almost surely, 2^127644463 is an apocalyptic number.

127644463 is a deficient number, since it is larger than the sum of its proper divisors (1).

127644463 is an equidigital number, since it uses as much as digits as its factorization.

127644463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 37.

The square root of 127644463 is about 11297.9849088233. The cubic root of 127644463 is about 503.5013741902.

The spelling of 127644463 in words is "one hundred twenty-seven million, six hundred forty-four thousand, four hundred sixty-three".