89761661 has 8 divisors (see below), whose sum is σ = 98026848. Its totient is φ = 81514000.

The previous prime is 89761627. The next prime is 89761673. The reversal of 89761661 is 16616798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89761661 - 2¹⁴ = 89745277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89761691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7826 + ... + 15516.

It is an arithmetic number, because the mean of its divisors is an integer number (12253356).

Almost surely, 2^89761661 is an apocalyptic number.

It is an amenable number.

89761661 is a deficient number, since it is larger than the sum of its proper divisors (8265187).

89761661 is a wasteful number, since it uses less digits than its factorization.

89761661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8763.

The product of its digits is 108864, while the sum is 44.

The square root of 89761661 is about 9474.2630847998. The cubic root of 89761661 is about 447.7445347442.

The spelling of 89761661 in words is "eighty-nine million, seven hundred sixty-one thousand, six hundred sixty-one".