64298281 has 4 divisors (see below), whose sum is σ = 64337364. Its totient is φ = 64259200.

The previous prime is 64298279. The next prime is 64298321. The reversal of 64298281 is 18289246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46022656 + 18275625 = 6784^2 + 4275^2 .

It is a cyclic number.

It is not a de Polignac number, because 64298281 - 2¹ = 64298279 is a prime.

It is a super-2 number, since 2×64298281² = 8268537879109922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64298231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16960 + ... + 20401.

It is an arithmetic number, because the mean of its divisors is an integer number (16084341).

Almost surely, 2^64298281 is an apocalyptic number.

It is an amenable number.

64298281 is a deficient number, since it is larger than the sum of its proper divisors (39083).

64298281 is a wasteful number, since it uses less digits than its factorization.

64298281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39082.

The product of its digits is 55296, while the sum is 40.

The square root of 64298281 is about 8018.6208914002. The cubic root of 64298281 is about 400.6204558388.

The spelling of 64298281 in words is "sixty-four million, two hundred ninety-eight thousand, two hundred eighty-one".