64346880 has 144 divisors (see below), whose sum is σ = 221487840. Its totient is φ = 15826944.

The previous prime is 64346869. The next prime is 64346897. The reversal of 64346880 is 8864346.

64346880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49276 + ... + 50564.

It is an arithmetic number, because the mean of its divisors is an integer number (1538110).

Almost surely, 2^64346880 is an apocalyptic number.

64346880 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 64346880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110743920).

64346880 is an abundant number, since it is smaller than the sum of its proper divisors (157140960).

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

64346880 is a wasteful number, since it uses less digits than its factorization.

64346880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 64346880 is about 8021.6507029414. The cubic root of 64346880 is about 400.7213649661.

The spelling of 64346880 in words is "sixty-four million, three hundred forty-six thousand, eight hundred eighty".