64521327 has 12 divisors (see below), whose sum is σ = 93155784. Its totient is φ = 39705120.

The previous prime is 64521311. The next prime is 64521343. The reversal of 64521327 is 72312546.

64521327 is nontrivially palindromic in base 2.

It is an interprime number because it is at equal distance from previous prime (64521311) and next prime (64521343).

It is not a de Polignac number, because 64521327 - 2⁴ = 64521311 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64521294 and 64521303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64521367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63124 + ... + 64137.

It is an arithmetic number, because the mean of its divisors is an integer number (7762982).

Almost surely, 2^64521327 is an apocalyptic number.

64521327 is a deficient number, since it is larger than the sum of its proper divisors (28634457).

64521327 is a wasteful number, since it uses less digits than its factorization.

64521327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127290 (or 127277 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 64521327 is about 8032.5168533903. The cubic root of 64521327 is about 401.0831621684.

The spelling of 64521327 in words is "sixty-four million, five hundred twenty-one thousand, three hundred twenty-seven".