65201665 has 8 divisors (see below), whose sum is σ = 81643968. Its totient is φ = 49893360.

The previous prime is 65201651. The next prime is 65201677. The reversal of 65201665 is 56610256.

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

It is not a de Polignac number, because 65201665 - 2¹⁵ = 65168897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283371 + ... + 283600.

It is an arithmetic number, because the mean of its divisors is an integer number (10205496).

Almost surely, 2^65201665 is an apocalyptic number.

It is an amenable number.

65201665 is a deficient number, since it is larger than the sum of its proper divisors (16442303).

65201665 is a wasteful number, since it uses less digits than its factorization.

65201665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566999.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 65201665 is about 8074.7547950387. The cubic root of 65201665 is about 402.4879617813.

The spelling of 65201665 in words is "sixty-five million, two hundred one thousand, six hundred sixty-five".