89975665 has 8 divisors (see below), whose sum is σ = 116276328. Its totient is φ = 66443520.

The previous prime is 89975657. The next prime is 89975687. The reversal of 89975665 is 56657998.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2534464 + 87441201 = 1592^2 + 9351^2 .

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

It is not a de Polignac number, because 89975665 - 2³ = 89975657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692056 + ... + 692185.

It is an arithmetic number, because the mean of its divisors is an integer number (14534541).

Almost surely, 2^89975665 is an apocalyptic number.

It is an amenable number.

89975665 is a deficient number, since it is larger than the sum of its proper divisors (26300663).

89975665 is a wasteful number, since it uses less digits than its factorization.

89975665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384259.

The product of its digits is 4082400, while the sum is 55.

The square root of 89975665 is about 9485.5503266811. The cubic root of 89975665 is about 448.1000802798.

The spelling of 89975665 in words is "eighty-nine million, nine hundred seventy-five thousand, six hundred sixty-five".