870610681 has 8 divisors (see below), whose sum is σ = 922090824. Its totient is φ = 819160320.

The previous prime is 870610679. The next prime is 870610691. The reversal of 870610681 is 186016078.

It can be written as a sum of positive squares in 4 ways, for example, as 217297081 + 653313600 = 14741^2 + 25560^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 870610681 - 2¹ = 870610679 is a prime.

It is a super-2 number, since 2×870610681² = 1515925915742567522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 870610681.

It is not an unprimeable number, because it can be changed into a prime (870610691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87291 + ... + 96751.

It is an arithmetic number, because the mean of its divisors is an integer number (115261353).

Almost surely, 2^870610681 is an apocalyptic number.

It is an amenable number.

870610681 is a deficient number, since it is larger than the sum of its proper divisors (51480143).

870610681 is a wasteful number, since it uses less digits than its factorization.

870610681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14891.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 870610681 is about 29506.1126040012. The cubic root of 870610681 is about 954.8635829376.

The spelling of 870610681 in words is "eight hundred seventy million, six hundred ten thousand, six hundred eighty-one".