681133295 has 16 divisors (see below), whose sum is σ = 846689760. Its totient is φ = 525404544.

The previous prime is 681133273. The next prime is 681133303. The reversal of 681133295 is 592331186.

681133295 = 433² + 434² + ... + 1285².

It is a happy number.

681133295 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 681133295 - 2⁶ = 681133231 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120932 + ... + 126438.

It is an arithmetic number, because the mean of its divisors is an integer number (52918110).

Almost surely, 2^681133295 is an apocalyptic number.

681133295 is a deficient number, since it is larger than the sum of its proper divisors (165556465).

681133295 is a wasteful number, since it uses less digits than its factorization.

681133295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6394.

The product of its digits is 38880, while the sum is 38.

The square root of 681133295 is about 26098.5305141880. The cubic root of 681133295 is about 879.8541833980.

The spelling of 681133295 in words is "six hundred eighty-one million, one hundred thirty-three thousand, two hundred ninety-five".