64528169 has 8 divisors (see below), whose sum is σ = 66110688. Its totient is φ = 62964000.

The previous prime is 64528157. The next prime is 64528181. The reversal of 64528169 is 96182546.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64528157) and next prime (64528181).

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

It is a cyclic number.

It is not a de Polignac number, because 64528169 - 2⁴ = 64528153 is a prime.

It is a super-2 number, since 2×64528169² = 8327769188985122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64528969) 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, 2669 + ... + 11669.

It is an arithmetic number, because the mean of its divisors is an integer number (8263836).

Almost surely, 2^64528169 is an apocalyptic number.

It is an amenable number.

64528169 is a deficient number, since it is larger than the sum of its proper divisors (1582519).

64528169 is a wasteful number, since it uses less digits than its factorization.

64528169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9175.

The product of its digits is 103680, while the sum is 41.

The square root of 64528169 is about 8032.9427360090. The cubic root of 64528169 is about 401.0973389486.

The spelling of 64528169 in words is "sixty-four million, five hundred twenty-eight thousand, one hundred sixty-nine".