65601001 has 8 divisors (see below), whose sum is σ = 66290400. Its totient is φ = 64914720.

The previous prime is 65600981. The next prime is 65601013. The reversal of 65601001 is 10010656.

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 65601001 - 2⁹ = 65600489 is a prime.

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 65601001.

It is not an unprimeable number, because it can be changed into a prime (65601031) 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, 80685 + ... + 81493.

It is an arithmetic number, because the mean of its divisors is an integer number (8286300).

Almost surely, 2^65601001 is an apocalyptic number.

It is an amenable number.

65601001 is a deficient number, since it is larger than the sum of its proper divisors (689399).

65601001 is a wasteful number, since it uses less digits than its factorization.

65601001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 65601001 is about 8099.4444871238. Note that the first 4 decimals coincide. The cubic root of 65601001 is about 403.3079864013.

Adding to 65601001 its reverse (10010656), we get a palindrome (75611657).

The spelling of 65601001 in words is "sixty-five million, six hundred one thousand, one".