89688811 has 2 divisors, whose sum is σ = 89688812. Its totient is φ = 89688810.

The previous prime is 89688803. The next prime is 89688817. The reversal of 89688811 is 11888698.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89688811 - 2³ = 89688803 is a prime.

It is not a weakly prime, because it can be changed into another prime (89688817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44844405 + 44844406.

It is an arithmetic number, because the mean of its divisors is an integer number (44844406).

Almost surely, 2^89688811 is an apocalyptic number.

89688811 is a deficient number, since it is larger than the sum of its proper divisors (1).

89688811 is an equidigital number, since it uses as much as digits as its factorization.

89688811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 49.

The square root of 89688811 is about 9470.4176782231. The cubic root of 89688811 is about 447.6233730766.

It can be divided in two parts, 89 and 688811, that added together give a square (688900 = 830²).

The spelling of 89688811 in words is "eighty-nine million, six hundred eighty-eight thousand, eight hundred eleven".