65011001 has 6 divisors (see below), whose sum is σ = 71458506. Its totient is φ = 59100800.

The previous prime is 65010997. The next prime is 65011013. The reversal of 65011001 is 10011056.

It can be written as a sum of positive squares in only one way, i.e., 46512400 + 18498601 = 6820^2 + 4301^2 .

It is not a de Polignac number, because 65011001 - 2² = 65010997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65011081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268520 + ... + 268761.

It is an arithmetic number, because the mean of its divisors is an integer number (11909751).

Almost surely, 2^65011001 is an apocalyptic number.

It is an amenable number.

65011001 is a deficient number, since it is larger than the sum of its proper divisors (6447505).

65011001 is a wasteful number, since it uses less digits than its factorization.

65011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537303 (or 537292 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 65011001 is about 8062.9399724914. The cubic root of 65011001 is about 402.0952576584.

Adding to 65011001 its reverse (10011056), we get a palindrome (75022057).

Subtracting from 65011001 its reverse (10011056), we obtain a palindrome (54999945).

The spelling of 65011001 in words is "sixty-five million, eleven thousand, one".