998667038 has 8 divisors (see below), whose sum is σ = 1563131088. Its totient is φ = 477623344.

The previous prime is 998667031. The next prime is 998667049. The reversal of 998667038 is 830766899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998667031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10855031 + ... + 10855122.

It is an arithmetic number, because the mean of its divisors is an integer number (195391386).

Almost surely, 2^998667038 is an apocalyptic number.

998667038 is a deficient number, since it is larger than the sum of its proper divisors (564464050).

998667038 is a wasteful number, since it uses less digits than its factorization.

998667038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21710178.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The square root of 998667038 is about 31601.6935938566. The cubic root of 998667038 is about 999.5554817662. Note that the first 3 decimals are identical.

The spelling of 998667038 in words is "nine hundred ninety-eight million, six hundred sixty-seven thousand, thirty-eight".