872340061 has 2 divisors, whose sum is σ = 872340062. Its totient is φ = 872340060.

The previous prime is 872340059. The next prime is 872340107. The reversal of 872340061 is 160043278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 872079961 + 260100 = 29531^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 872340061 - 2¹ = 872340059 is a prime.

Together with 872340059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872340361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436170030 + 436170031.

It is an arithmetic number, because the mean of its divisors is an integer number (436170031).

Almost surely, 2^872340061 is an apocalyptic number.

It is an amenable number.

872340061 is a deficient number, since it is larger than the sum of its proper divisors (1).

872340061 is an equidigital number, since it uses as much as digits as its factorization.

872340061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 872340061 is about 29535.4035184895. The cubic root of 872340061 is about 955.4954113884.

It can be divided in two parts, 8723 and 40061, that added together give a palindrome (48784).

The spelling of 872340061 in words is "eight hundred seventy-two million, three hundred forty thousand, sixty-one".