64003616 has 12 divisors (see below), whose sum is σ = 126007182. Its totient is φ = 32001792.

The previous prime is 64003573. The next prime is 64003619. The reversal of 64003616 is 61630046.

It can be written as a sum of positive squares in only one way, i.e., 63936016 + 67600 = 7996^2 + 260^2 .

It is a super-2 number, since 2×64003616² = 8192925722150912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64003619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000025 + ... + 1000088.

Almost surely, 2^64003616 is an apocalyptic number.

It is an amenable number.

64003616 is a deficient number, since it is larger than the sum of its proper divisors (62003566).

64003616 is a wasteful number, since it uses less digits than its factorization.

64003616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000123 (or 2000115 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 64003616 is about 8000.2259968078. The cubic root of 64003616 is about 400.0075331915.

The spelling of 64003616 in words is "sixty-four million, three thousand, six hundred sixteen".