89687641 has 2 divisors, whose sum is σ = 89687642. Its totient is φ = 89687640.

The previous prime is 89687627. The next prime is 89687659. The reversal of 89687641 is 14678698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60840000 + 28847641 = 7800^2 + 5371^2 .

It is a cyclic number.

It is not a de Polignac number, because 89687641 - 2⁷ = 89687513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89687441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44843820 + 44843821.

It is an arithmetic number, because the mean of its divisors is an integer number (44843821).

Almost surely, 2^89687641 is an apocalyptic number.

It is an amenable number.

89687641 is a deficient number, since it is larger than the sum of its proper divisors (1).

89687641 is an equidigital number, since it uses as much as digits as its factorization.

89687641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 49.

The square root of 89687641 is about 9470.3559067228. The cubic root of 89687641 is about 447.6214266368.

The spelling of 89687641 in words is "eighty-nine million, six hundred eighty-seven thousand, six hundred forty-one".