64849560 has 128 divisors (see below), whose sum is σ = 209018880. Its totient is φ = 16037888.

The previous prime is 64849507. The next prime is 64849571. The reversal of 64849560 is 6594846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169129 + ... + 169511.

It is an arithmetic number, because the mean of its divisors is an integer number (1632960).

Almost surely, 2^64849560 is an apocalyptic number.

64849560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64849560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104509440).

64849560 is an abundant number, since it is smaller than the sum of its proper divisors (144169320).

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

64849560 is a wasteful number, since it uses less digits than its factorization.

64849560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 64849560 is about 8052.9224508870. The cubic root of 64849560 is about 401.7621424027.

The spelling of 64849560 in words is "sixty-four million, eight hundred forty-nine thousand, five hundred sixty".