65669442 has 16 divisors (see below), whose sum is σ = 131518080. Its totient is φ = 21859952.

The previous prime is 65669389. The next prime is 65669459. The reversal of 65669442 is 24496656.

It is a super-2 number, since 2×65669442² = 8624951225182728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 65669394 and 65669403.

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 in 7 ways as a sum of consecutive naturals, for example, 2442 + ... + 11717.

It is an arithmetic number, because the mean of its divisors is an integer number (8219880).

Almost surely, 2^65669442 is an apocalyptic number.

65669442 is an abundant number, since it is smaller than the sum of its proper divisors (65848638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65669442 is a wasteful number, since it uses less digits than its factorization.

65669442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14937.

The product of its digits is 311040, while the sum is 42.

The square root of 65669442 is about 8103.6684285575. The cubic root of 65669442 is about 403.4481936531.

The spelling of 65669442 in words is "sixty-five million, six hundred sixty-nine thousand, four hundred forty-two".