820564214 has 8 divisors (see below), whose sum is σ = 1231119648. Its totient is φ = 410191000.

The previous prime is 820564187. The next prime is 820564223. The reversal of 820564214 is 412465028.

820564214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33677 + ... + 52680.

It is an arithmetic number, because the mean of its divisors is an integer number (153889956).

Almost surely, 2^820564214 is an apocalyptic number.

820564214 is a deficient number, since it is larger than the sum of its proper divisors (410555434).

820564214 is a wasteful number, since it uses less digits than its factorization.

820564214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91110.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 820564214 is about 28645.4920362699. The cubic root of 820564214 is about 936.2047873863.

The spelling of 820564214 in words is "eight hundred twenty million, five hundred sixty-four thousand, two hundred fourteen".