681327273 has 8 divisors (see below), whose sum is σ = 991021536. Its totient is φ = 412925600.

The previous prime is 681327271. The next prime is 681327313. The reversal of 681327273 is 372723186.

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

It is a cyclic number.

It is not a de Polignac number, because 681327273 - 2¹ = 681327271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (681327271) 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, 10323108 + ... + 10323173.

It is an arithmetic number, because the mean of its divisors is an integer number (123877692).

Almost surely, 2^681327273 is an apocalyptic number.

It is an amenable number.

681327273 is a deficient number, since it is larger than the sum of its proper divisors (309694263).

681327273 is a wasteful number, since it uses less digits than its factorization.

681327273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20646295.

The product of its digits is 84672, while the sum is 39.

The square root of 681327273 is about 26102.2465125131. The cubic root of 681327273 is about 879.9376991879.

The spelling of 681327273 in words is "six hundred eighty-one million, three hundred twenty-seven thousand, two hundred seventy-three".