66064325 has 12 divisors (see below), whose sum is σ = 83919108. Its totient is φ = 51561600.

The previous prime is 66064321. The next prime is 66064331. The reversal of 66064325 is 52346066.

It can be written as a sum of positive squares in 6 ways, for example, as 34175716 + 31888609 = 5846^2 + 5647^2 .

It is not a de Polignac number, because 66064325 - 2² = 66064321 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66064291 and 66064300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66064321) 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, 31202 + ... + 33251.

It is an arithmetic number, because the mean of its divisors is an integer number (6993259).

Almost surely, 2^66064325 is an apocalyptic number.

It is an amenable number.

66064325 is a deficient number, since it is larger than the sum of its proper divisors (17854783).

66064325 is a wasteful number, since it uses less digits than its factorization.

66064325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64504 (or 64499 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 66064325 is about 8127.9963705701. The cubic root of 66064325 is about 404.2552487078.

The spelling of 66064325 in words is "sixty-six million, sixty-four thousand, three hundred twenty-five".