65669644 has 6 divisors (see below), whose sum is σ = 114921884. Its totient is φ = 32834820.

The previous prime is 65669627. The next prime is 65669651. The reversal of 65669644 is 44696656.

It is a junction number, because it is equal to n+sod(n) for n = 65669594 and 65669603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8208702 + ... + 8208709.

Almost surely, 2^65669644 is an apocalyptic number.

It is an amenable number.

65669644 is a deficient number, since it is larger than the sum of its proper divisors (49252240).

65669644 is a wasteful number, since it uses less digits than its factorization.

65669644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16417415 (or 16417413 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The square root of 65669644 is about 8103.6808920391. The cubic root of 65669644 is about 403.4486073232.

The spelling of 65669644 in words is "sixty-five million, six hundred sixty-nine thousand, six hundred forty-four".