64035520 has 56 divisors (see below), whose sum is σ = 154131264. Its totient is φ = 25337856.

The previous prime is 64035487. The next prime is 64035547. The reversal of 64035520 is 2553046.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 30009 + ... + 32071.

It is an arithmetic number, because the mean of its divisors is an integer number (2752344).

Almost surely, 2^64035520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64035520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77065632).

64035520 is an abundant number, since it is smaller than the sum of its proper divisors (90095744).

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

64035520 is a wasteful number, since it uses less digits than its factorization.

64035520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 64035520 is about 8002.2196920604. The cubic root of 64035520 is about 400.0739863142.

Adding to 64035520 its reverse (2553046), we get a palindrome (66588566).

The spelling of 64035520 in words is "sixty-four million, thirty-five thousand, five hundred twenty".