64099860 has 192 divisors, whose sum is σ = 215550720. Its totient is φ = 14049280.

The previous prime is 64099859. The next prime is 64099879. The reversal of 64099860 is 6899046.

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 63 ways as a sum of consecutive naturals, for example, 325282 + ... + 325478.

It is an arithmetic number, because the mean of its divisors is an integer number (1122660).

Almost surely, 2^64099860 is an apocalyptic number.

64099860 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 64099860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107775360).

64099860 is an abundant number, since it is smaller than the sum of its proper divisors (151450860).

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

64099860 is a wasteful number, since it uses less digits than its factorization.

64099860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 64099860 is about 8006.2388173224. The cubic root of 64099860 is about 400.2079335570.

The spelling of 64099860 in words is "sixty-four million, ninety-nine thousand, eight hundred sixty".