89661719 has 6 divisors (see below), whose sum is σ = 104300424. Its totient is φ = 76852860.

The previous prime is 89661713. The next prime is 89661731. The reversal of 89661719 is 91716698.

It is not a de Polignac number, because 89661719 - 2⁸ = 89661463 is a prime.

It is a super-2 number, since 2×89661719² = 16078447708069922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89661713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 914867 + ... + 914964.

It is an arithmetic number, because the mean of its divisors is an integer number (17383404).

Almost surely, 2^89661719 is an apocalyptic number.

89661719 is a deficient number, since it is larger than the sum of its proper divisors (14638705).

89661719 is a wasteful number, since it uses less digits than its factorization.

89661719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829845 (or 1829838 counting only the distinct ones).

The product of its digits is 163296, while the sum is 47.

The square root of 89661719 is about 9468.9872214509. The cubic root of 89661719 is about 447.5782978380.

The spelling of 89661719 in words is "eighty-nine million, six hundred sixty-one thousand, seven hundred nineteen".