127664013 has 8 divisors (see below), whose sum is σ = 170416288. Its totient is φ = 85010544.

The previous prime is 127663981. The next prime is 127664027. The reversal of 127664013 is 310466721.

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

It is not a de Polignac number, because 127664013 - 2⁵ = 127663981 is a prime.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21631 + ... + 26892.

It is an arithmetic number, because the mean of its divisors is an integer number (21302036).

Almost surely, 2^127664013 is an apocalyptic number.

It is an amenable number.

127664013 is a deficient number, since it is larger than the sum of its proper divisors (42752275).

127664013 is an equidigital number, since it uses as much as digits as its factorization.

127664013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49403.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 127664013 is about 11298.8500742332. The cubic root of 127664013 is about 503.5270782673.

The spelling of 127664013 in words is "one hundred twenty-seven million, six hundred sixty-four thousand, thirteen".