65516961 has 8 divisors (see below), whose sum is σ = 88204480. Its totient is φ = 43253712.

The previous prime is 65516951. The next prime is 65516987. The reversal of 65516961 is 16961556.

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

It is not a de Polignac number, because 65516961 - 2⁶ = 65516897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65516911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105706 + ... + 106323.

It is an arithmetic number, because the mean of its divisors is an integer number (11025560).

Almost surely, 2^65516961 is an apocalyptic number.

It is an amenable number.

65516961 is a deficient number, since it is larger than the sum of its proper divisors (22687519).

65516961 is a wasteful number, since it uses less digits than its factorization.

65516961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212135.

The product of its digits is 48600, while the sum is 39.

The square root of 65516961 is about 8094.2548143730. The cubic root of 65516961 is about 403.1356898073.

The spelling of 65516961 in words is "sixty-five million, five hundred sixteen thousand, nine hundred sixty-one".