127735645 has 4 divisors (see below), whose sum is σ = 153282780. Its totient is φ = 102188512.

The previous prime is 127735627. The next prime is 127735661. The reversal of 127735645 is 546537721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46212804 + 81522841 = 6798^2 + 9029^2 .

It is a cyclic number.

It is not a de Polignac number, because 127735645 - 2¹⁷ = 127604573 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 127735598 and 127735607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12773560 + ... + 12773569.

It is an arithmetic number, because the mean of its divisors is an integer number (38320695).

Almost surely, 2^127735645 is an apocalyptic number.

It is an amenable number.

127735645 is a deficient number, since it is larger than the sum of its proper divisors (25547135).

127735645 is an equidigital number, since it uses as much as digits as its factorization.

127735645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25547134.

The product of its digits is 176400, while the sum is 40.

The square root of 127735645 is about 11302.0195098044. The cubic root of 127735645 is about 503.6212366416.

The spelling of 127735645 in words is "one hundred twenty-seven million, seven hundred thirty-five thousand, six hundred forty-five".