It is a sphenic number, since it is the product of 3 distinct primes.
It is a 3-Lehmer number, since φ(127664461) divides (127664461-1)3.
It is a cyclic number.
It is a Carmichael number.
It is a deceptive number, since it divides R127664460.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 127664461.
It is a congruent number.
It is a Poulet number, since it divides 2127664460-1.
Almost surely, 2127664461 is an apocalyptic number.
127664461 is the 6040-th centered heptagonal number.
It is an amenable number.
127664461 is an equidigital number, since it uses as much as digits as its factorization.
127664461 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4763.
The square root of 127664461 is about 11298.8698992421. The cubic root of 127664461 is about 503.5276672610.
The spelling of 127664461 in words is "one hundred twenty-seven million, six hundred sixty-four thousand, four hundred sixty-one".