65440127 has 2 divisors, whose sum is σ = 65440128. Its totient is φ = 65440126.

The previous prime is 65440117. The next prime is 65440139. The reversal of 65440127 is 72104456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65440127 - 2¹² = 65436031 is a prime.

It is a super-2 number, since 2×65440127² = 8564820443552258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65440127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65440117) 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, 32720063 + 32720064.

It is an arithmetic number, because the mean of its divisors is an integer number (32720064).

Almost surely, 2^65440127 is an apocalyptic number.

65440127 is a deficient number, since it is larger than the sum of its proper divisors (1).

65440127 is an equidigital number, since it uses as much as digits as its factorization.

65440127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 65440127 is about 8089.5072161412. The cubic root of 65440127 is about 402.9780377870.

The spelling of 65440127 in words is "sixty-five million, four hundred forty thousand, one hundred twenty-seven".