64165229 has 4 divisors (see below), whose sum is σ = 65217180. Its totient is φ = 63113280.

The previous prime is 64165217. The next prime is 64165247. The reversal of 64165229 is 92256146.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3247204 + 60918025 = 1802^2 + 7805^2 .

It is a cyclic number.

It is not a de Polignac number, because 64165229 - 2¹² = 64161133 is a prime.

It is a super-2 number, since 2×64165229² = 8234353225244882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64165279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525884 + ... + 526005.

It is an arithmetic number, because the mean of its divisors is an integer number (16304295).

Almost surely, 2^64165229 is an apocalyptic number.

It is an amenable number.

64165229 is a deficient number, since it is larger than the sum of its proper divisors (1051951).

64165229 is a wasteful number, since it uses less digits than its factorization.

64165229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051950.

The product of its digits is 25920, while the sum is 35.

The square root of 64165229 is about 8010.3201558989. The cubic root of 64165229 is about 400.3439312768.

The spelling of 64165229 in words is "sixty-four million, one hundred sixty-five thousand, two hundred twenty-nine".