64527565 has 8 divisors (see below), whose sum is σ = 77477400. Its totient is φ = 51592512.

The previous prime is 64527517. The next prime is 64527583. The reversal of 64527565 is 56572546.

It can be written as a sum of positive squares in 4 ways, for example, as 1340964 + 63186601 = 1158^2 + 7949^2 .

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 64527565 - 2¹³ = 64519373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11911 + ... + 16459.

It is an arithmetic number, because the mean of its divisors is an integer number (9684675).

Almost surely, 2^64527565 is an apocalyptic number.

It is an amenable number.

64527565 is a deficient number, since it is larger than the sum of its proper divisors (12949835).

64527565 is a wasteful number, since it uses less digits than its factorization.

64527565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7391.

The product of its digits is 252000, while the sum is 40.

The square root of 64527565 is about 8032.9051407321. The cubic root of 64527565 is about 401.0960874871.

The spelling of 64527565 in words is "sixty-four million, five hundred twenty-seven thousand, five hundred sixty-five".