998607 has 8 divisors (see below), whose sum is σ = 1336576. Its totient is φ = 663192.

The previous prime is 998561. The next prime is 998617. The reversal of 998607 is 706899.

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

It is not a de Polignac number, because 998607 - 2¹⁰ = 997583 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998607.

It is not an unprimeable number, because it can be changed into a prime (998617) 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, 648 + ... + 1554.

It is an arithmetic number, because the mean of its divisors is an integer number (167072).

2⁹⁹⁸⁶⁰⁷ is an apocalyptic number.

998607 is a deficient number, since it is larger than the sum of its proper divisors (337969).

998607 is a wasteful number, since it uses less digits than its factorization.

998607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 998607 is about 999.3032572748. The cubic root of 998607 is about 99.9535450894.

The spelling of 998607 in words is "nine hundred ninety-eight thousand, six hundred seven".