8727021361 has 2 divisors, whose sum is σ = 8727021362. Its totient is φ = 8727021360.

The previous prime is 8727021343. The next prime is 8727021409. The reversal of 8727021361 is 1631207278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7094861361 + 1632160000 = 84231^2 + 40400^2 .

It is a cyclic number.

It is not a de Polignac number, because 8727021361 - 2²¹ = 8724924209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8727021361.

It is not a weakly prime, because it can be changed into another prime (8727021341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4363510680 + 4363510681.

It is an arithmetic number, because the mean of its divisors is an integer number (4363510681).

Almost surely, 2^8727021361 is an apocalyptic number.

It is an amenable number.

8727021361 is a deficient number, since it is larger than the sum of its proper divisors (1).

8727021361 is an equidigital number, since it uses as much as digits as its factorization.

8727021361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 8727021361 is about 93418.5279320971. The cubic root of 8727021361 is about 2058.8372299463.

The spelling of 8727021361 in words is "eight billion, seven hundred twenty-seven million, twenty-one thousand, three hundred sixty-one".