65224015 has 8 divisors (see below), whose sum is σ = 79934400. Its totient is φ = 51068832.

The previous prime is 65224013. The next prime is 65224037. The reversal of 65224015 is 51042256.

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 65224015 - 2¹ = 65224013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65224013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138540 + ... + 139009.

It is an arithmetic number, because the mean of its divisors is an integer number (9991800).

Almost surely, 2^65224015 is an apocalyptic number.

65224015 is a deficient number, since it is larger than the sum of its proper divisors (14710385).

65224015 is a wasteful number, since it uses less digits than its factorization.

65224015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277601.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 65224015 is about 8076.1386194146. The cubic root of 65224015 is about 402.5339451587.

The spelling of 65224015 in words is "sixty-five million, two hundred twenty-four thousand, fifteen".