998646051 has 16 divisors (see below), whose sum is σ = 1438494624. Its totient is φ = 612605184.

The previous prime is 998646049. The next prime is 998646053. The reversal of 998646051 is 150646899.

It is an interprime number because it is at equal distance from previous prime (998646049) and next prime (998646053).

It is not a de Polignac number, because 998646051 - 2¹ = 998646049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998646053) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 28026 + ... + 52751.

It is an arithmetic number, because the mean of its divisors is an integer number (89905914).

Almost surely, 2^998646051 is an apocalyptic number.

998646051 is a deficient number, since it is larger than the sum of its proper divisors (439848573).

998646051 is a wasteful number, since it uses less digits than its factorization.

998646051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81110.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 998646051 is about 31601.3615371237. The cubic root of 998646051 is about 999.5484798269.

The spelling of 998646051 in words is "nine hundred ninety-eight million, six hundred forty-six thousand, fifty-one".