89177681 has 2 divisors, whose sum is σ = 89177682. Its totient is φ = 89177680.

The previous prime is 89177653. The next prime is 89177701. The reversal of 89177681 is 18677198.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83101456 + 6076225 = 9116^2 + 2465^2 .

It is a cyclic number.

It is not a de Polignac number, because 89177681 - 2⁶ = 89177617 is a prime.

It is a super-2 number, since 2×89177681² = 15905317577075522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89177281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44588840 + 44588841.

It is an arithmetic number, because the mean of its divisors is an integer number (44588841).

Almost surely, 2^89177681 is an apocalyptic number.

It is an amenable number.

89177681 is a deficient number, since it is larger than the sum of its proper divisors (1).

89177681 is an equidigital number, since it uses as much as digits as its factorization.

89177681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 47.

The square root of 89177681 is about 9443.3935108096. The cubic root of 89177681 is about 446.7714282996.

The spelling of 89177681 in words is "eighty-nine million, one hundred seventy-seven thousand, six hundred eighty-one".