65251266 has 16 divisors (see below), whose sum is σ = 130720800. Its totient is φ = 21714048.

The previous prime is 65251261. The next prime is 65251267. The reversal of 65251266 is 66215256.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65251261) 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, 5071 + ... + 12498.

It is an arithmetic number, because the mean of its divisors is an integer number (8170050).

Almost surely, 2^65251266 is an apocalyptic number.

65251266 is an abundant number, since it is smaller than the sum of its proper divisors (65469534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65251266 is a wasteful number, since it uses less digits than its factorization.

65251266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18193.

The product of its digits is 21600, while the sum is 33.

The square root of 65251266 is about 8077.8255737544. The cubic root of 65251266 is about 402.5899977501.

The spelling of 65251266 in words is "sixty-five million, two hundred fifty-one thousand, two hundred sixty-six".