681433265 has 8 divisors (see below), whose sum is σ = 817945128. Its totient is φ = 544996480.

The previous prime is 681433241. The next prime is 681433267. The reversal of 681433265 is 562334186.

681433265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6265009 + 675168256 = 2503^2 + 25984^2 .

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

It is not a de Polignac number, because 681433265 - 2⁸ = 681433009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681433267) 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, 3635 + ... + 37095.

It is an arithmetic number, because the mean of its divisors is an integer number (102243141).

Almost surely, 2^681433265 is an apocalyptic number.

It is an amenable number.

681433265 is a deficient number, since it is larger than the sum of its proper divisors (136511863).

681433265 is a wasteful number, since it uses less digits than its factorization.

681433265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37539.

The product of its digits is 103680, while the sum is 38.

The square root of 681433265 is about 26104.2767568841. The cubic root of 681433265 is about 879.9833265608.

The spelling of 681433265 in words is "six hundred eighty-one million, four hundred thirty-three thousand, two hundred sixty-five".