64323565 has 8 divisors (see below), whose sum is σ = 77281560. Its totient is φ = 51396672.

The previous prime is 64323559. The next prime is 64323583. The reversal of 64323565 is 56532346.

It can be written as a sum of positive squares in 4 ways, for example, as 19554084 + 44769481 = 4422^2 + 6691^2 .

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 64323565 - 2¹³ = 64315373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64323565.

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, 2950 + ... + 11719.

It is an arithmetic number, because the mean of its divisors is an integer number (9660195).

Almost surely, 2^64323565 is an apocalyptic number.

It is an amenable number.

64323565 is a deficient number, since it is larger than the sum of its proper divisors (12957995).

64323565 is a wasteful number, since it uses less digits than its factorization.

64323565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15551.

The product of its digits is 64800, while the sum is 34.

The square root of 64323565 is about 8020.1973167747. The cubic root of 64323565 is about 400.6729609241.

The spelling of 64323565 in words is "sixty-four million, three hundred twenty-three thousand, five hundred sixty-five".