64853281 has 8 divisors (see below), whose sum is σ = 65528064. Its totient is φ = 64182240.

The previous prime is 64853231. The next prime is 64853297. The reversal of 64853281 is 18235846.

It is a happy number.

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 64853281 - 2⁹ = 64852769 is a prime.

It is a super-2 number, since 2×64853281² = 8411896112929922, which contains 22 as substring.

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 64853281.

It is not an unprimeable number, because it can be changed into a prime (64853231) 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, 44541 + ... + 45973.

It is an arithmetic number, because the mean of its divisors is an integer number (8191008).

Almost surely, 2^64853281 is an apocalyptic number.

It is an amenable number.

64853281 is a deficient number, since it is larger than the sum of its proper divisors (674783).

64853281 is a wasteful number, since it uses less digits than its factorization.

64853281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871.

The product of its digits is 46080, while the sum is 37.

The square root of 64853281 is about 8053.1534817114. The cubic root of 64853281 is about 401.7698264863.

The spelling of 64853281 in words is "sixty-four million, eight hundred fifty-three thousand, two hundred eighty-one".