64115284 has 12 divisors (see below), whose sum is σ = 112259700. Its totient is φ = 32041088.

The previous prime is 64115273. The next prime is 64115287. The reversal of 64115284 is 48251146.

It can be written as a sum of positive squares in 2 ways, for example, as 55175184 + 8940100 = 7428^2 + 2990^2 .

It is a super-2 number, since 2×64115284² = 8221539284801312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64115287) 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, 9762 + ... + 14950.

It is an arithmetic number, because the mean of its divisors is an integer number (9354975).

Almost surely, 2^64115284 is an apocalyptic number.

It is an amenable number.

64115284 is a deficient number, since it is larger than the sum of its proper divisors (48144416).

64115284 is a wasteful number, since it uses less digits than its factorization.

64115284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8282 (or 8280 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 64115284 is about 8007.2020081924. The cubic root of 64115284 is about 400.2400309341.

The spelling of 64115284 in words is "sixty-four million, one hundred fifteen thousand, two hundred eighty-four".