127603645 has 8 divisors (see below), whose sum is σ = 164903256. Its totient is φ = 94230336.

The previous prime is 127603633. The next prime is 127603669. The reversal of 127603645 is 546306721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 116964 + 127486681 = 342^2 + 11291^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 127603645 - 2¹⁷ = 127472573 is a prime.

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 127603645.

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 7 ways as a sum of consecutive naturals, for example, 981502 + ... + 981631.

It is an arithmetic number, because the mean of its divisors is an integer number (20612907).

Almost surely, 2^127603645 is an apocalyptic number.

It is an amenable number.

127603645 is a deficient number, since it is larger than the sum of its proper divisors (37299611).

127603645 is a wasteful number, since it uses less digits than its factorization.

127603645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963151.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 127603645 is about 11296.1783360568. The cubic root of 127603645 is about 503.4476987710.

The spelling of 127603645 in words is "one hundred twenty-seven million, six hundred three thousand, six hundred forty-five".