199056864 has 48 divisors (see below), whose sum is σ = 523998720. Its totient is φ = 66165120.

The previous prime is 199056857. The next prime is 199056883. The reversal of 199056864 is 468650991.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33649 + ... + 39119.

It is an arithmetic number, because the mean of its divisors is an integer number (10916640).

Almost surely, 2^199056864 is an apocalyptic number.

It is an amenable number.

199056864 is an abundant number, since it is smaller than the sum of its proper divisors (324941856).

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

199056864 is a wasteful number, since it uses less digits than its factorization.

199056864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5863 (or 5855 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 199056864 is about 14108.7513267475. The cubic root of 199056864 is about 583.8828500862.

The spelling of 199056864 in words is "one hundred ninety-nine million, fifty-six thousand, eight hundred sixty-four".