8880687981 has 24 divisors (see below), whose sum is σ = 14003417376. Its totient is φ = 5378540640.

The previous prime is 8880687971. The next prime is 8880687983. The reversal of 8880687981 is 1897860888.

It is a happy number.

It is not a de Polignac number, because 8880687981 - 2⁶ = 8880687917 is a prime.

It is a super-2 number, since 2×8880687981² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8880687983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117766 + ... + 177848.

It is an arithmetic number, because the mean of its divisors is an integer number (583475724).

Almost surely, 2^8880687981 is an apocalyptic number.

It is an amenable number.

8880687981 is a deficient number, since it is larger than the sum of its proper divisors (5122729395).

8880687981 is a wasteful number, since it uses less digits than its factorization.

8880687981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61593 (or 61590 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 63.

The square root of 8880687981 is about 94237.4022402995. The cubic root of 8880687981 is about 2070.8510880973.

The spelling of 8880687981 in words is "eight billion, eight hundred eighty million, six hundred eighty-seven thousand, nine hundred eighty-one".