64884616 has 8 divisors (see below), whose sum is σ = 121658670. Its totient is φ = 32442304.

The previous prime is 64884613. The next prime is 64884623. The reversal of 64884616 is 61648846.

It can be written as a sum of positive squares in only one way, i.e., 60000516 + 4884100 = 7746^2 + 2210^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (64884613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4055281 + ... + 4055296.

Almost surely, 2^64884616 is an apocalyptic number.

It is an amenable number.

64884616 is a deficient number, since it is larger than the sum of its proper divisors (56774054).

64884616 is a wasteful number, since it uses less digits than its factorization.

64884616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110583 (or 8110579 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 64884616 is about 8055.0987579297. The cubic root of 64884616 is about 401.8345234467.

It can be divided in two parts, 648 and 84616, that added together give a square (85264 = 292²).

The spelling of 64884616 in words is "sixty-four million, eight hundred eighty-four thousand, six hundred sixteen".