98566145 has 4 divisors (see below), whose sum is σ = 118279380. Its totient is φ = 78852912.

The previous prime is 98566121. The next prime is 98566147. The reversal of 98566145 is 54166589.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54166589 = 727 ⋅74507.

It can be written as a sum of positive squares in 2 ways, for example, as 35188624 + 63377521 = 5932^2 + 7961^2 .

It is a cyclic number.

It is not a de Polignac number, because 98566145 - 2¹⁴ = 98549761 is a prime.

It is a super-4 number, since 4×98566145⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 98566096 and 98566105.

It is not an unprimeable number, because it can be changed into a prime (98566147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9856610 + ... + 9856619.

It is an arithmetic number, because the mean of its divisors is an integer number (29569845).

It is a Proth number, since it is equal to 47 ⋅ 2²¹ + 1 and 47 < 2²¹.

Almost surely, 2^98566145 is an apocalyptic number.

It is an amenable number.

98566145 is a deficient number, since it is larger than the sum of its proper divisors (19713235).

98566145 is a wasteful number, since it uses less digits than its factorization.

98566145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19713234.

The product of its digits is 259200, while the sum is 44.

The square root of 98566145 is about 9928.0483983510. The cubic root of 98566145 is about 461.9297398199.

The spelling of 98566145 in words is "ninety-eight million, five hundred sixty-six thousand, one hundred forty-five".