64161727 has 12 divisors (see below), whose sum is σ = 78566520. Its totient is φ = 52100496.

The previous prime is 64161709. The next prime is 64161781. The reversal of 64161727 is 72716146.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-64161727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64161692 and 64161701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64161707) 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 in 11 ways as a sum of consecutive naturals, for example, 33528 + ... + 35389.

It is an arithmetic number, because the mean of its divisors is an integer number (6547210).

Almost surely, 2^64161727 is an apocalyptic number.

64161727 is a deficient number, since it is larger than the sum of its proper divisors (14404793).

64161727 is a wasteful number, since it uses less digits than its factorization.

64161727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68950 (or 68943 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 64161727 is about 8010.1015599055. The cubic root of 64161727 is about 400.3366478411.

The spelling of 64161727 in words is "sixty-four million, one hundred sixty-one thousand, seven hundred twenty-seven".