64527605 has 4 divisors (see below), whose sum is σ = 77433132. Its totient is φ = 51622080.

The previous prime is 64527583. The next prime is 64527607. The reversal of 64527605 is 50672546.

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 9278116 + 55249489 = 3046^2 + 7433^2 .

It is not a de Polignac number, because 64527605 - 2¹² = 64523509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64527607) 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, 6452756 + ... + 6452765.

It is an arithmetic number, because the mean of its divisors is an integer number (19358283).

Almost surely, 2^64527605 is an apocalyptic number.

It is an amenable number.

64527605 is a deficient number, since it is larger than the sum of its proper divisors (12905527).

64527605 is a wasteful number, since it uses less digits than its factorization.

64527605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12905526.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 64527605 is about 8032.9076304910. The cubic root of 64527605 is about 401.0961703656.

The spelling of 64527605 in words is "sixty-four million, five hundred twenty-seven thousand, six hundred five".