64841281 has 16 divisors (see below), whose sum is σ = 73008000. Its totient is φ = 57224448.

The previous prime is 64841269. The next prime is 64841333. The reversal of 64841281 is 18214846.

It is not a de Polignac number, because 64841281 - 2¹³ = 64833089 is a prime.

It is a super-2 number, since 2×64841281² = 8408783443441922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64841221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32295 + ... + 34243.

It is an arithmetic number, because the mean of its divisors is an integer number (4563000).

Almost surely, 2^64841281 is an apocalyptic number.

It is an amenable number.

64841281 is a deficient number, since it is larger than the sum of its proper divisors (8166719).

64841281 is a wasteful number, since it uses less digits than its factorization.

64841281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088.

The product of its digits is 12288, while the sum is 34.

The square root of 64841281 is about 8052.4083974920. The cubic root of 64841281 is about 401.7450447265.

The spelling of 64841281 in words is "sixty-four million, eight hundred forty-one thousand, two hundred eighty-one".