990560245 has 4 divisors (see below), whose sum is σ = 1188672300. Its totient is φ = 792448192.

The previous prime is 990560209. The next prime is 990560303. The reversal of 990560245 is 542065099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542065099 = 677 ⋅800687.

It can be written as a sum of positive squares in 2 ways, for example, as 451902564 + 538657681 = 21258^2 + 23209^2 .

It is a cyclic number.

It is not a de Polignac number, because 990560245 - 2¹⁵ = 990527477 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 990560198 and 990560207.

It is a congruent number.

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, 99056020 + ... + 99056029.

It is an arithmetic number, because the mean of its divisors is an integer number (297168075).

Almost surely, 2^990560245 is an apocalyptic number.

It is an amenable number.

990560245 is a deficient number, since it is larger than the sum of its proper divisors (198112055).

990560245 is a wasteful number, since it uses less digits than its factorization.

990560245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198112054.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 990560245 is about 31473.1670633891. The cubic root of 990560245 is about 996.8434617499.

The spelling of 990560245 in words is "nine hundred ninety million, five hundred sixty thousand, two hundred forty-five".