681123562 has 8 divisors (see below), whose sum is σ = 1167640416. Its totient is φ = 291910092.

The previous prime is 681123559. The next prime is 681123563. The reversal of 681123562 is 265321186.

681123562 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 not an unprimeable number, because it can be changed into a prime (681123563) 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, 24325828 + ... + 24325855.

It is an arithmetic number, because the mean of its divisors is an integer number (145955052).

Almost surely, 2^681123562 is an apocalyptic number.

681123562 is a deficient number, since it is larger than the sum of its proper divisors (486516854).

681123562 is a wasteful number, since it uses less digits than its factorization.

681123562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48651692.

The product of its digits is 17280, while the sum is 34.

The square root of 681123562 is about 26098.3440470847. The cubic root of 681123562 is about 879.8499925092.

The spelling of 681123562 in words is "six hundred eighty-one million, one hundred twenty-three thousand, five hundred sixty-two".