89645690 has 8 divisors (see below), whose sum is σ = 161362260. Its totient is φ = 35858272.

The previous prime is 89645683. The next prime is 89645711. The reversal of 89645690 is 9654698.

It can be written as a sum of positive squares in 2 ways, for example, as 81414529 + 8231161 = 9023^2 + 2869^2 .

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

It is a super-2 number, since 2×89645690² = 16072699471152200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4482275 + ... + 4482294.

Almost surely, 2^89645690 is an apocalyptic number.

89645690 is a deficient number, since it is larger than the sum of its proper divisors (71716570).

89645690 is a wasteful number, since it uses less digits than its factorization.

89645690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8964576.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 89645690 is about 9468.1407889828. The cubic root of 89645690 is about 447.5516247673.

The spelling of 89645690 in words is "eighty-nine million, six hundred forty-five thousand, six hundred ninety".