127647645 has 16 divisors (see below), whose sum is σ = 216250560. Its totient is φ = 64073984.

The previous prime is 127647617. The next prime is 127647649. The reversal of 127647645 is 546746721.

It is a cyclic number.

It is not a de Polignac number, because 127647645 - 2⁵ = 127647613 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 127647597 and 127647606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127647649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250035 + ... + 250544.

It is an arithmetic number, because the mean of its divisors is an integer number (13515660).

Almost surely, 2^127647645 is an apocalyptic number.

127647645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127647645 is a deficient number, since it is larger than the sum of its proper divisors (88602915).

127647645 is a wasteful number, since it uses less digits than its factorization.

127647645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500604.

The product of its digits is 282240, while the sum is 42.

The square root of 127647645 is about 11298.1257295181. The cubic root of 127647645 is about 503.5055580198.

The spelling of 127647645 in words is "one hundred twenty-seven million, six hundred forty-seven thousand, six hundred forty-five".