127645361 has 2 divisors, whose sum is σ = 127645362. Its totient is φ = 127645360.

The previous prime is 127645351. The next prime is 127645387. The reversal of 127645361 is 163546721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127260961 + 384400 = 11281^2 + 620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127645361 is a prime.

It is not a weakly prime, because it can be changed into another prime (127645351) by changing a digit.

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 as a sum of consecutive naturals, namely, 63822680 + 63822681.

It is an arithmetic number, because the mean of its divisors is an integer number (63822681).

Almost surely, 2^127645361 is an apocalyptic number.

It is an amenable number.

127645361 is a deficient number, since it is larger than the sum of its proper divisors (1).

127645361 is an equidigital number, since it uses as much as digits as its factorization.

127645361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 127645361 is about 11298.0246503537. The cubic root of 127645361 is about 503.5025549260.

It can be divided in two parts, 12 and 7645361, that added together give a cube (7645373 = 197³).

The spelling of 127645361 in words is "one hundred twenty-seven million, six hundred forty-five thousand, three hundred sixty-one".