998510056 has 8 divisors (see below), whose sum is σ = 1872206370. Its totient is φ = 499255024.

The previous prime is 998510033. The next prime is 998510057. The reversal of 998510056 is 650015899.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 727380900 + 271129156 = 26970^2 + 16466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 998509994 and 998510021.

It is not an unprimeable number, because it can be changed into a prime (998510057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62406871 + ... + 62406886.

Almost surely, 2^998510056 is an apocalyptic number.

It is an amenable number.

998510056 is a deficient number, since it is larger than the sum of its proper divisors (873696314).

998510056 is a wasteful number, since it uses less digits than its factorization.

998510056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124813763 (or 124813759 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 998510056 is about 31599.2097369539. The cubic root of 998510056 is about 999.5031051364.

The spelling of 998510056 in words is "nine hundred ninety-eight million, five hundred ten thousand, fifty-six".