88020689 has 2 divisors, whose sum is σ = 88020690. Its totient is φ = 88020688.

The previous prime is 88020683. The next prime is 88020731. The reversal of 88020689 is 98602088.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50908225 + 37112464 = 7135^2 + 6092^2 .

It is a cyclic number.

It is not a de Polignac number, because 88020689 - 2⁸ = 88020433 is a prime.

It is not a weakly prime, because it can be changed into another prime (88020683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44010344 + 44010345.

It is an arithmetic number, because the mean of its divisors is an integer number (44010345).

Almost surely, 2^88020689 is an apocalyptic number.

It is an amenable number.

88020689 is a deficient number, since it is larger than the sum of its proper divisors (1).

88020689 is an equidigital number, since it uses as much as digits as its factorization.

88020689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 88020689 is about 9381.9341822462. The cubic root of 88020689 is about 444.8308729008.

The spelling of 88020689 in words is "eighty-eight million, twenty thousand, six hundred eighty-nine".