127664377 has 8 divisors (see below), whose sum is σ = 132850080. Its totient is φ = 122579520.

The previous prime is 127664357. The next prime is 127664387. The reversal of 127664377 is 773466721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127664377 is a prime.

It is a super-4 number, since 4×127664377⁴ (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127664357) 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, 22624 + ... + 27697.

It is an arithmetic number, because the mean of its divisors is an integer number (16606260).

Almost surely, 2^127664377 is an apocalyptic number.

It is an amenable number.

127664377 is a deficient number, since it is larger than the sum of its proper divisors (5185703).

127664377 is an equidigital number, since it uses as much as digits as its factorization.

127664377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50423.

The product of its digits is 296352, while the sum is 43.

The square root of 127664377 is about 11298.8661820556. The cubic root of 127664377 is about 503.5275568248.

The spelling of 127664377 in words is "one hundred twenty-seven million, six hundred sixty-four thousand, three hundred seventy-seven".