89666719 has 8 divisors (see below), whose sum is σ = 98490240. Its totient is φ = 81253656.

The previous prime is 89666711. The next prime is 89666729. The reversal of 89666719 is 91766698.

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 89666719 - 2³ = 89666711 is a prime.

It is a super-2 number, since 2×89666719² = 16080240992449922, 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 (89666711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102157 + ... + 103030.

It is an arithmetic number, because the mean of its divisors is an integer number (12311280).

Almost surely, 2^89666719 is an apocalyptic number.

89666719 is a deficient number, since it is larger than the sum of its proper divisors (8823521).

89666719 is a wasteful number, since it uses less digits than its factorization.

89666719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205229.

The product of its digits is 979776, while the sum is 52.

The square root of 89666719 is about 9469.2512375583. The cubic root of 89666719 is about 447.5866174416.

The spelling of 89666719 in words is "eighty-nine million, six hundred sixty-six thousand, seven hundred nineteen".