681824922 has 8 divisors (see below), whose sum is σ = 1363649856. Its totient is φ = 227274972.

The previous prime is 681824921. The next prime is 681824929. The reversal of 681824922 is 229428186.

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

681824922 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (681824921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56818738 + ... + 56818749.

It is an arithmetic number, because the mean of its divisors is an integer number (170456232).

Almost surely, 2^681824922 is an apocalyptic number.

681824922 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

681824922 is a wasteful number, since it uses less digits than its factorization.

681824922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113637492.

The product of its digits is 110592, while the sum is 42.

The square root of 681824922 is about 26111.7774576914. Note that the first 3 decimals coincide. The cubic root of 681824922 is about 880.1518858013.

The spelling of 681824922 in words is "six hundred eighty-one million, eight hundred twenty-four thousand, nine hundred twenty-two".