127645645 has 8 divisors (see below), whose sum is σ = 153279000. Its totient is φ = 102047040.

The previous prime is 127645633. The next prime is 127645663. The reversal of 127645645 is 546546721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2630884 + 125014761 = 1622^2 + 11181^2 .

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

It is not a de Polignac number, because 127645645 - 2⁵ = 127645613 is a prime.

It is a super-3 number, since 3×127645645³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127645598 and 127645607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231 + ... + 15979.

It is an arithmetic number, because the mean of its divisors is an integer number (19159875).

Almost surely, 2^127645645 is an apocalyptic number.

It is an amenable number.

127645645 is a deficient number, since it is larger than the sum of its proper divisors (25633355).

127645645 is a wasteful number, since it uses less digits than its factorization.

127645645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17375.

The product of its digits is 201600, while the sum is 40.

The square root of 127645645 is about 11298.0372189155. The cubic root of 127645645 is about 503.5029283424.

The spelling of 127645645 in words is "one hundred twenty-seven million, six hundred forty-five thousand, six hundred forty-five".