820684119 has 8 divisors (see below), whose sum is σ = 1151837440. Its totient is φ = 518326776.

The previous prime is 820684069. The next prime is 820684127. The reversal of 820684119 is 911486028.

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

It is not a de Polignac number, because 820684119 - 2⁷ = 820683991 is a prime.

It is a super-2 number, since 2×820684119² = 1347044846357612322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820684019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7198927 + ... + 7199040.

It is an arithmetic number, because the mean of its divisors is an integer number (143979680).

Almost surely, 2^820684119 is an apocalyptic number.

820684119 is a deficient number, since it is larger than the sum of its proper divisors (331153321).

820684119 is a wasteful number, since it uses less digits than its factorization.

820684119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14397989.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 820684119 is about 28647.5848720272. The cubic root of 820684119 is about 936.2503861608.

The spelling of 820684119 in words is "eight hundred twenty million, six hundred eighty-four thousand, one hundred nineteen".