65510066 has 8 divisors (see below), whose sum is σ = 98673564. Its totient is φ = 32618880.

The previous prime is 65510059. The next prime is 65510077. The reversal of 65510066 is 66001556.

It can be written as a sum of positive squares in 2 ways, for example, as 60762025 + 4748041 = 7795^2 + 2179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67475 + ... + 68438.

Almost surely, 2^65510066 is an apocalyptic number.

65510066 is a deficient number, since it is larger than the sum of its proper divisors (33163498).

65510066 is a wasteful number, since it uses less digits than its factorization.

65510066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136156.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 65510066 is about 8093.8288837855. The cubic root of 65510066 is about 403.1215473213.

The spelling of 65510066 in words is "sixty-five million, five hundred ten thousand, sixty-six".