870740881 has 2 divisors, whose sum is σ = 870740882. Its totient is φ = 870740880.

The previous prime is 870740809. The next prime is 870740957. The reversal of 870740881 is 188047078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 831803281 + 38937600 = 28841^2 + 6240^2 .

It is a cyclic number.

It is not a de Polignac number, because 870740881 - 2¹⁷ = 870609809 is a prime.

It is a super-2 number, since 2×870740881² = 1516379363689312322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (870740081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435370440 + 435370441.

It is an arithmetic number, because the mean of its divisors is an integer number (435370441).

Almost surely, 2^870740881 is an apocalyptic number.

It is an amenable number.

870740881 is a deficient number, since it is larger than the sum of its proper divisors (1).

870740881 is an equidigital number, since it uses as much as digits as its factorization.

870740881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100352, while the sum is 43.

The square root of 870740881 is about 29508.3188440141. The cubic root of 870740881 is about 954.9111805777.

The spelling of 870740881 in words is "eight hundred seventy million, seven hundred forty thousand, eight hundred eighty-one".