681546273 has 16 divisors (see below), whose sum is σ = 913278336. Its totient is φ = 452096640.

The previous prime is 681546251. The next prime is 681546287. The reversal of 681546273 is 372645186.

It is not a de Polignac number, because 681546273 - 2⁵ = 681546241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (681546223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 895213 + ... + 895973.

It is an arithmetic number, because the mean of its divisors is an integer number (57079896).

Almost surely, 2^681546273 is an apocalyptic number.

It is an amenable number.

681546273 is a deficient number, since it is larger than the sum of its proper divisors (231732063).

681546273 is a wasteful number, since it uses less digits than its factorization.

681546273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864.

The product of its digits is 241920, while the sum is 42.

The square root of 681546273 is about 26106.4412166806. The cubic root of 681546273 is about 880.0319689660.

The spelling of 681546273 in words is "six hundred eighty-one million, five hundred forty-six thousand, two hundred seventy-three".