65264221 has 8 divisors (see below), whose sum is σ = 74944800. Its totient is φ = 56208240.

The previous prime is 65264201. The next prime is 65264233. The reversal of 65264221 is 12246256.

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

It is not a de Polignac number, because 65264221 - 2⁷ = 65264093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65264221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65264201) 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, 155926 + ... + 156343.

It is an arithmetic number, because the mean of its divisors is an integer number (9368100).

Almost surely, 2^65264221 is an apocalyptic number.

It is an amenable number.

65264221 is a deficient number, since it is larger than the sum of its proper divisors (9680579).

65264221 is a wasteful number, since it uses less digits than its factorization.

65264221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312299.

The product of its digits is 5760, while the sum is 28.

The square root of 65264221 is about 8078.6274205461. The cubic root of 65264221 is about 402.6166394212.

The spelling of 65264221 in words is "sixty-five million, two hundred sixty-four thousand, two hundred twenty-one".