88716781 has 2 divisors, whose sum is σ = 88716782. Its totient is φ = 88716780.

The previous prime is 88716769. The next prime is 88716811. The reversal of 88716781 is 18761788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49140100 + 39576681 = 7010^2 + 6291^2 .

It is a cyclic number.

It is not a de Polignac number, because 88716781 - 2⁷ = 88716653 is a prime.

It is a super-2 number, since 2×88716781² = 15741334462003922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88716751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44358390 + 44358391.

It is an arithmetic number, because the mean of its divisors is an integer number (44358391).

Almost surely, 2^88716781 is an apocalyptic number.

It is an amenable number.

88716781 is a deficient number, since it is larger than the sum of its proper divisors (1).

88716781 is an equidigital number, since it uses as much as digits as its factorization.

88716781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 46.

The square root of 88716781 is about 9418.9585942396. The cubic root of 88716781 is about 446.0004105582. Note that the first 3 decimals are identical.

The spelling of 88716781 in words is "eighty-eight million, seven hundred sixteen thousand, seven hundred eighty-one".