65669706 has 12 divisors (see below), whose sum is σ = 142284402. Its totient is φ = 21889896.

The previous prime is 65669663. The next prime is 65669713. The reversal of 65669706 is 60796656.

It can be written as a sum of positive squares in only one way, i.e., 59213025 + 6456681 = 7695^2 + 2541^2 .

It is a super-2 number, since 2×65669706² = 8625020572252872, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1824141 + ... + 1824176.

Almost surely, 2^65669706 is an apocalyptic number.

65669706 is an abundant number, since it is smaller than the sum of its proper divisors (76614696).

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

65669706 is a wasteful number, since it uses less digits than its factorization.

65669706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3648325 (or 3648322 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 65669706 is about 8103.6847174603. The cubic root of 65669706 is about 403.4487342910.

The spelling of 65669706 in words is "sixty-five million, six hundred sixty-nine thousand, seven hundred six".