673281061 has 4 divisors (see below), whose sum is σ = 673333324. Its totient is φ = 673228800.

The previous prime is 673281053. The next prime is 673281067. The reversal of 673281061 is 160182376.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 62252100 + 611028961 = 7890^2 + 24719^2 .

It is a cyclic number.

It is not a de Polignac number, because 673281061 - 2³ = 673281053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673281067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8431 + ... + 37651.

It is an arithmetic number, because the mean of its divisors is an integer number (168333331).

Almost surely, 2^673281061 is an apocalyptic number.

It is an amenable number.

673281061 is a deficient number, since it is larger than the sum of its proper divisors (52263).

673281061 is a wasteful number, since it uses less digits than its factorization.

673281061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52262.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 673281061 is about 25947.6600293745. The cubic root of 673281061 is about 876.4600650618.

The spelling of 673281061 in words is "six hundred seventy-three million, two hundred eighty-one thousand, sixty-one".