998649277 has 8 divisors (see below), whose sum is σ = 1038000096. Its totient is φ = 959949072.

The previous prime is 998649269. The next prime is 998649371. The reversal of 998649277 is 772946899.

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 998649277 - 2³ = 998649269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998649217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159523 + ... + 165664.

It is an arithmetic number, because the mean of its divisors is an integer number (129750012).

Almost surely, 2^998649277 is an apocalyptic number.

It is an amenable number.

998649277 is a deficient number, since it is larger than the sum of its proper divisors (39350819).

998649277 is a wasteful number, since it uses less digits than its factorization.

998649277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325307.

The product of its digits is 13716864, while the sum is 61.

The square root of 998649277 is about 31601.4125791870. The cubic root of 998649277 is about 999.5495561308.

The spelling of 998649277 in words is "nine hundred ninety-eight million, six hundred forty-nine thousand, two hundred seventy-seven".