3664521226 has 4 divisors (see below), whose sum is σ = 5496781842. Its totient is φ = 1832260612.

The previous prime is 3664521209. The next prime is 3664521227. The reversal of 3664521226 is 6221254663.

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., 3208656025 + 455865201 = 56645^2 + 21351^2 .

It is not an unprimeable number, because it can be changed into a prime (3664521227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 916130305 + ... + 916130308.

Almost surely, 2^3664521226 is an apocalyptic number.

3664521226 is a deficient number, since it is larger than the sum of its proper divisors (1832260616).

3664521226 is a wasteful number, since it uses less digits than its factorization.

3664521226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832260615.

The product of its digits is 103680, while the sum is 37.

The square root of 3664521226 is about 60535.2890965262. The cubic root of 3664521226 is about 1541.7208550491.

Adding to 3664521226 its reverse (6221254663), we get a palindrome (9885775889).

The spelling of 3664521226 in words is "three billion, six hundred sixty-four million, five hundred twenty-one thousand, two hundred twenty-six".