65226709 has 8 divisors (see below), whose sum is σ = 66271032. Its totient is φ = 64190400.

The previous prime is 65226701. The next prime is 65226727. The reversal of 65226709 is 90762256.

It can be written as a sum of positive squares in 4 ways, for example, as 43164900 + 22061809 = 6570^2 + 4697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65226709 - 2³ = 65226701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65226701) 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, 15607 + ... + 19339.

It is an arithmetic number, because the mean of its divisors is an integer number (8283879).

Almost surely, 2^65226709 is an apocalyptic number.

It is an amenable number.

65226709 is a deficient number, since it is larger than the sum of its proper divisors (1044323).

65226709 is a wasteful number, since it uses less digits than its factorization.

65226709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 65226709 is about 8076.3054053199. The cubic root of 65226709 is about 402.5394871436.

It can be divided in two parts, 6522670 and 9, that multiplied together give a triangular number (58704030 = T₁₀₈₃₅).

The spelling of 65226709 in words is "sixty-five million, two hundred twenty-six thousand, seven hundred nine".