3640522306 has 4 divisors (see below), whose sum is σ = 5460783462. Its totient is φ = 1820261152.

The previous prime is 3640522297. The next prime is 3640522313. The reversal of 3640522306 is 6032250463.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2915028081 + 725494225 = 53991^2 + 26935^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910130575 + ... + 910130578.

Almost surely, 2^3640522306 is an apocalyptic number.

3640522306 is a deficient number, since it is larger than the sum of its proper divisors (1820261156).

3640522306 is a wasteful number, since it uses less digits than its factorization.

3640522306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820261155.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 3640522306 is about 60336.7409295530. The cubic root of 3640522306 is about 1538.3479086769.

Adding to 3640522306 its reverse (6032250463), we get a palindrome (9672772769).

The spelling of 3640522306 in words is "three billion, six hundred forty million, five hundred twenty-two thousand, three hundred six".