998867061 has 12 divisors (see below), whose sum is σ = 1450286188. Its totient is φ = 662459904.

The previous prime is 998867057. The next prime is 998867071. The reversal of 998867061 is 160768899.

It can be written as a sum of positive squares in 2 ways, for example, as 216266436 + 782600625 = 14706^2 + 27975^2 .

It is not a de Polignac number, because 998867061 - 2² = 998867057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 998866989 and 998867007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998867071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285790 + ... + 289263.

Almost surely, 2^998867061 is an apocalyptic number.

It is an amenable number.

998867061 is a deficient number, since it is larger than the sum of its proper divisors (451419127).

998867061 is a wasteful number, since it uses less digits than its factorization.

998867061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575252 (or 575249 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 998867061 is about 31604.8581866776. The cubic root of 998867061 is about 999.6222109601.

The spelling of 998867061 in words is "nine hundred ninety-eight million, eight hundred sixty-seven thousand, sixty-one".