676561361 has 4 divisors (see below), whose sum is σ = 773212992. Its totient is φ = 579909732.

The previous prime is 676561349. The next prime is 676561373. The reversal of 676561361 is 163165676.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (676561349) and next prime (676561373).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676561361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (676561331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48325805 + ... + 48325818.

It is an arithmetic number, because the mean of its divisors is an integer number (193303248).

Almost surely, 2^676561361 is an apocalyptic number.

It is an amenable number.

676561361 is a deficient number, since it is larger than the sum of its proper divisors (96651631).

676561361 is an equidigital number, since it uses as much as digits as its factorization.

676561361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96651630.

The product of its digits is 136080, while the sum is 41.

The square root of 676561361 is about 26010.7931636081. The cubic root of 676561361 is about 877.8811631857.

The spelling of 676561361 in words is "six hundred seventy-six million, five hundred sixty-one thousand, three hundred sixty-one".