681675135 has 16 divisors (see below), whose sum is σ = 1111260384. Its totient is φ = 356700032.

The previous prime is 681675133. The next prime is 681675191. The reversal of 681675135 is 531576186.

681675135 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 681675135 - 2¹ = 681675133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681675133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427932 + ... + 429521.

It is an arithmetic number, because the mean of its divisors is an integer number (69453774).

Almost surely, 2^681675135 is an apocalyptic number.

681675135 is a deficient number, since it is larger than the sum of its proper divisors (429585249).

681675135 is a wasteful number, since it uses less digits than its factorization.

681675135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857514.

The product of its digits is 151200, while the sum is 42.

The square root of 681675135 is about 26108.9091116423. The cubic root of 681675135 is about 880.0874288996.

The spelling of 681675135 in words is "six hundred eighty-one million, six hundred seventy-five thousand, one hundred thirty-five".