64016500 has 24 divisors (see below), whose sum is σ = 139813128. Its totient is φ = 25606400.

The previous prime is 64016479. The next prime is 64016503. The reversal of 64016500 is 561046.

It can be written as a sum of positive squares in 4 ways, for example, as 3363556 + 60652944 = 1834^2 + 7788^2 .

It is a super-2 number, since 2×64016500² = 8196224544500000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64016503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63517 + ... + 64516.

It is an arithmetic number, because the mean of its divisors is an integer number (5825547).

Almost surely, 2^64016500 is an apocalyptic number.

It is an amenable number.

64016500 is an abundant number, since it is smaller than the sum of its proper divisors (75796628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64016500 is a wasteful number, since it uses less digits than its factorization.

64016500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128052 (or 128040 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 64016500 is about 8001.0311835413. The cubic root of 64016500 is about 400.0343720463.

Adding to 64016500 its reverse (561046), we get a palindrome (64577546).

It can be divided in two parts, 64016 and 500, that added together give a square (64516 = 254²).

The spelling of 64016500 in words is "sixty-four million, sixteen thousand, five hundred".