64498560 has 128 divisors (see below), whose sum is σ = 235008000. Its totient is φ = 14739456.

The previous prime is 64498549. The next prime is 64498571. The reversal of 64498560 is 6589446.

It is an interprime number because it is at equal distance from previous prime (64498549) and next prime (64498571).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 11041 + ... + 15839.

It is an arithmetic number, because the mean of its divisors is an integer number (1836000).

Almost surely, 2^64498560 is an apocalyptic number.

64498560 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 64498560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117504000).

64498560 is an abundant number, since it is smaller than the sum of its proper divisors (170509440).

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

64498560 is a wasteful number, since it uses less digits than its factorization.

64498560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4828 (or 4816 counting only the distinct ones).

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

The square root of 64498560 is about 8031.0995511200. The cubic root of 64498560 is about 401.0359812076.

The spelling of 64498560 in words is "sixty-four million, four hundred ninety-eight thousand, five hundred sixty".