89681761 has 16 divisors (see below), whose sum is σ = 101211264. Its totient is φ = 78845184.

The previous prime is 89681731. The next prime is 89681819. The reversal of 89681761 is 16718698.

It is a cyclic number.

It is not a de Polignac number, because 89681761 - 2¹⁷ = 89550689 is a prime.

It is a super-2 number, since 2×89681761² = 16085636512122242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89681701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91305 + ... + 92281.

It is an arithmetic number, because the mean of its divisors is an integer number (6325704).

Almost surely, 2^89681761 is an apocalyptic number.

It is an amenable number.

89681761 is a deficient number, since it is larger than the sum of its proper divisors (11529503).

89681761 is a wasteful number, since it uses less digits than its factorization.

89681761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320.

The product of its digits is 145152, while the sum is 46.

The square root of 89681761 is about 9470.0454592362. The cubic root of 89681761 is about 447.6116442726.

The spelling of 89681761 in words is "eighty-nine million, six hundred eighty-one thousand, seven hundred sixty-one".