65212589 has 4 divisors (see below), whose sum is σ = 70228956. Its totient is φ = 60196224.

The previous prime is 65212573. The next prime is 65212601. The reversal of 65212589 is 98521256.

65212589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19758025 + 45454564 = 4445^2 + 6742^2 .

It is a cyclic number.

It is not a de Polignac number, because 65212589 - 2⁴ = 65212573 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65212549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2508164 + ... + 2508189.

It is an arithmetic number, because the mean of its divisors is an integer number (17557239).

Almost surely, 2^65212589 is an apocalyptic number.

It is an amenable number.

65212589 is a deficient number, since it is larger than the sum of its proper divisors (5016367).

65212589 is a wasteful number, since it uses less digits than its factorization.

65212589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016366.

The product of its digits is 43200, while the sum is 38.

The square root of 65212589 is about 8075.4311959177. The cubic root of 65212589 is about 402.5104383698.

It can be divided in two parts, 652 and 12589, that multiplied together give a palindrome (8208028).

The spelling of 65212589 in words is "sixty-five million, two hundred twelve thousand, five hundred eighty-nine".