65650001 has 4 divisors (see below), whose sum is σ = 65823600. Its totient is φ = 65476404.

The previous prime is 65649973. The next prime is 65650003. The reversal of 65650001 is 10005656.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65650001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65650003) 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, 86231 + ... + 86988.

It is an arithmetic number, because the mean of its divisors is an integer number (16455900).

Almost surely, 2^65650001 is an apocalyptic number.

It is an amenable number.

65650001 is a deficient number, since it is larger than the sum of its proper divisors (173599).

65650001 is a wasteful number, since it uses less digits than its factorization.

65650001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173598.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 65650001 is about 8102.4688212914. The cubic root of 65650001 is about 403.4083770087.

Adding to 65650001 its reverse (10005656), we get a palindrome (75655657).

The spelling of 65650001 in words is "sixty-five million, six hundred fifty thousand, one".