89146661 has 2 divisors, whose sum is σ = 89146662. Its totient is φ = 89146660.

The previous prime is 89146621. The next prime is 89146693. The reversal of 89146661 is 16664198.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73788100 + 15358561 = 8590^2 + 3919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89146661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89146621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44573330 + 44573331.

It is an arithmetic number, because the mean of its divisors is an integer number (44573331).

Almost surely, 2^89146661 is an apocalyptic number.

It is an amenable number.

89146661 is a deficient number, since it is larger than the sum of its proper divisors (1).

89146661 is an equidigital number, since it uses as much as digits as its factorization.

89146661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 89146661 is about 9441.7509499033. The cubic root of 89146661 is about 446.7196199070.

The spelling of 89146661 in words is "eighty-nine million, one hundred forty-six thousand, six hundred sixty-one".