64434552 has 128 divisors (see below), whose sum is σ = 200578560. Its totient is φ = 16796160.

The previous prime is 64434541. The next prime is 64434553. The reversal of 64434552 is 25543446.

It is a super-2 number, since 2×64434552² = 8303622982881408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64434553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355902 + ... + 356082.

It is an arithmetic number, because the mean of its divisors is an integer number (1567020).

Almost surely, 2^64434552 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 64434552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100289280).

64434552 is an abundant number, since it is smaller than the sum of its proper divisors (136144008).

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

64434552 is a wasteful number, since it uses less digits than its factorization.

64434552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 369 counting only the distinct ones).

The product of its digits is 57600, while the sum is 33.

The square root of 64434552 is about 8027.1135534512. The cubic root of 64434552 is about 400.9032753653.

Adding to 64434552 its reverse (25543446), we get a palindrome (89977998).

The spelling of 64434552 in words is "sixty-four million, four hundred thirty-four thousand, five hundred fifty-two".