64165873 has 8 divisors (see below), whose sum is σ = 64763496. Its totient is φ = 63571200.

The previous prime is 64165853. The next prime is 64165921. The reversal of 64165873 is 37856146.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 613089 + 63552784 = 783^2 + 7972^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64165873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64165813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72393 + ... + 73273.

It is an arithmetic number, because the mean of its divisors is an integer number (8095437).

Almost surely, 2^64165873 is an apocalyptic number.

It is an amenable number.

64165873 is a deficient number, since it is larger than the sum of its proper divisors (597623).

64165873 is a wasteful number, since it uses less digits than its factorization.

64165873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475.

The product of its digits is 120960, while the sum is 40.

The square root of 64165873 is about 8010.3603539416. The cubic root of 64165873 is about 400.3452706347.

The spelling of 64165873 in words is "sixty-four million, one hundred sixty-five thousand, eight hundred seventy-three".