99774545 has 8 divisors (see below), whose sum is σ = 128939496. Its totient is φ = 73679616.

The previous prime is 99774527. The next prime is 99774553. The reversal of 99774545 is 54547799.

It can be written as a sum of positive squares in 4 ways, for example, as 9296401 + 90478144 = 3049^2 + 9512^2 .

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 99774545 - 2⁶ = 99774481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99774493 and 99774502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767432 + ... + 767561.

It is an arithmetic number, because the mean of its divisors is an integer number (16117437).

Almost surely, 2^99774545 is an apocalyptic number.

It is an amenable number.

99774545 is a deficient number, since it is larger than the sum of its proper divisors (29164951).

99774545 is a wasteful number, since it uses less digits than its factorization.

99774545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535011.

The product of its digits is 1587600, while the sum is 50.

The square root of 99774545 is about 9988.7208890828. The cubic root of 99774545 is about 463.8097977492.

The spelling of 99774545 in words is "ninety-nine million, seven hundred seventy-four thousand, five hundred forty-five".