127664463 has 8 divisors (see below), whose sum is σ = 174178048. Its totient is φ = 83130264.

The previous prime is 127664437. The next prime is 127664491. The reversal of 127664463 is 364466721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 127664463 - 2¹² = 127660367 is a prime.

It is a super-2 number, since 2×127664463² = 32596430226156738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127664063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494695 + ... + 494952.

It is an arithmetic number, because the mean of its divisors is an integer number (21772256).

Almost surely, 2^127664463 is an apocalyptic number.

127664463 is a deficient number, since it is larger than the sum of its proper divisors (46513585).

127664463 is an equidigital number, since it uses as much as digits as its factorization.

127664463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989693.

The product of its digits is 145152, while the sum is 39.

The square root of 127664463 is about 11298.8699877466. The cubic root of 127664463 is about 503.5276698904.

The spelling of 127664463 in words is "one hundred twenty-seven million, six hundred sixty-four thousand, four hundred sixty-three".