65664226 has 12 divisors (see below), whose sum is σ = 99159282. Its totient is φ = 32612576.

The previous prime is 65664223. The next prime is 65664239. The reversal of 65664226 is 62246656.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 65626201 + 38025 = 8101^2 + 195^2 .

It is not an unprimeable number, because it can be changed into a prime (65664223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59310 + ... + 60406.

Almost surely, 2^65664226 is an apocalyptic number.

65664226 is a deficient number, since it is larger than the sum of its proper divisors (33495056).

65664226 is a wasteful number, since it uses less digits than its factorization.

65664226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1272 counting only the distinct ones).

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

The square root of 65664226 is about 8103.3465926122. The cubic root of 65664226 is about 403.4375116604.

The spelling of 65664226 in words is "sixty-five million, six hundred sixty-four thousand, two hundred twenty-six".