646065127 has 16 divisors (see below), whose sum is σ = 695217600. Its totient is φ = 598233600.

The previous prime is 646065109. The next prime is 646065137. The reversal of 646065127 is 721560646.

It is a happy number.

646065127 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-646065127 is a prime.

It is a super-2 number, since 2×646065127² = 834800296651052258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646065137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278649 + ... + 280957.

It is an arithmetic number, because the mean of its divisors is an integer number (43451100).

Almost surely, 2^646065127 is an apocalyptic number.

646065127 is a deficient number, since it is larger than the sum of its proper divisors (49152473).

646065127 is a wasteful number, since it uses less digits than its factorization.

646065127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 646065127 is about 25417.8112157597. The cubic root of 646065127 is about 864.4875965556.

The spelling of 646065127 in words is "six hundred forty-six million, sixty-five thousand, one hundred twenty-seven".