64331284 has 12 divisors (see below), whose sum is σ = 112640724. Its totient is φ = 32148224.

The previous prime is 64331269. The next prime is 64331287. The reversal of 64331284 is 48213346.

It can be written as a sum of positive squares in 2 ways, for example, as 20903184 + 43428100 = 4572^2 + 6590^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64331287) 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, 7602 + ... + 13654.

It is an arithmetic number, because the mean of its divisors is an integer number (9386727).

Almost surely, 2^64331284 is an apocalyptic number.

It is an amenable number.

64331284 is a deficient number, since it is larger than the sum of its proper divisors (48309440).

64331284 is a wasteful number, since it uses less digits than its factorization.

64331284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8714 (or 8712 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 64331284 is about 8020.6785249130. The cubic root of 64331284 is about 400.6889875590.

The spelling of 64331284 in words is "sixty-four million, three hundred thirty-one thousand, two hundred eighty-four".