64340880 has 80 divisors (see below), whose sum is σ = 200505024. Its totient is φ = 17067520.

The previous prime is 64340873. The next prime is 64340893. The reversal of 64340880 is 8804346.

64340880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

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, 53890 + ... + 55070.

Almost surely, 2^64340880 is an apocalyptic number.

64340880 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 64340880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100252512).

64340880 is an abundant number, since it is smaller than the sum of its proper divisors (136164144).

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

64340880 is a wasteful number, since it uses less digits than its factorization.

64340880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424 (or 1418 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 64340880 is about 8021.2767063604. The cubic root of 64340880 is about 400.7089095426.

The spelling of 64340880 in words is "sixty-four million, three hundred forty thousand, eight hundred eighty".