87070043063689 has 9 divisors (see below), whose sum is σ = 101285636280717. Its totient is φ = 74631409496364.

The previous prime is 87070043063621. The next prime is 87070043063719. The reversal of 87070043063689 is 98636034007078.

The square root of 87070043063689 is 9331133.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 87070043063689 - 2³⁵ = 87035683325321 is a prime.

It is a super-2 number, since 2×87070043063689² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87070043063789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 64651422 + ... + 65984440.

Almost surely, 2^{87070043063689} is an apocalyptic number.

87070043063689 is the 9331133-rd square number.

87070043063689 is the 4665567-th centered octagonal number.

It is an amenable number.

87070043063689 is a deficient number, since it is larger than the sum of its proper divisors (14215593217028).

87070043063689 is an frugal number, since it uses more digits than its factorization.

87070043063689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666052 (or 1333026 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 61.

The spelling of 87070043063689 in words is "eighty-seven trillion, seventy billion, forty-three million, sixty-three thousand, six hundred eighty-nine".