65201601 has 4 divisors (see below), whose sum is σ = 86935472. Its totient is φ = 43467732.

The previous prime is 65201569. The next prime is 65201611. The reversal of 65201601 is 10610256.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65201601 - 2⁵ = 65201569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65201611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10866931 + ... + 10866936.

It is an arithmetic number, because the mean of its divisors is an integer number (21733868).

Almost surely, 2^65201601 is an apocalyptic number.

It is an amenable number.

65201601 is a deficient number, since it is larger than the sum of its proper divisors (21733871).

65201601 is a wasteful number, since it uses less digits than its factorization.

65201601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21733870.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 65201601 is about 8074.7508320691. The cubic root of 65201601 is about 402.4878300913.

Adding to 65201601 its reverse (10610256), we get a palindrome (75811857).

The spelling of 65201601 in words is "sixty-five million, two hundred one thousand, six hundred one".