65661301 has 8 divisors (see below), whose sum is σ = 67516064. Its totient is φ = 63821520.

The previous prime is 65661289. The next prime is 65661331. The reversal of 65661301 is 10316656.

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

It is a cyclic number.

It is not a de Polignac number, because 65661301 - 2²³ = 57272693 is a prime.

It is a super-2 number, since 2×65661301² = 8622812898025202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65661301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65661331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5455 + ... + 12691.

It is an arithmetic number, because the mean of its divisors is an integer number (8439508).

Almost surely, 2^65661301 is an apocalyptic number.

It is an amenable number.

65661301 is a deficient number, since it is larger than the sum of its proper divisors (1854763).

65661301 is a wasteful number, since it uses less digits than its factorization.

65661301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7491.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 65661301 is about 8103.1661096142. The cubic root of 65661301 is about 403.4315212233.

Adding to 65661301 its reverse (10316656), we get a palindrome (75977957).

The spelling of 65661301 in words is "sixty-five million, six hundred sixty-one thousand, three hundred one".