998598001 has 8 divisors (see below), whose sum is σ = 1002256200. Its totient is φ = 994947072.

The previous prime is 998597993. The next prime is 998598047. The reversal of 998598001 is 100895899.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 223532401 + 775065600 = 14951^2 + 27840^2 .

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 998598001 - 2³ = 998597993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998598401) 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, 462741 + ... + 464893.

It is an arithmetic number, because the mean of its divisors is an integer number (125282025).

Almost surely, 2^998598001 is an apocalyptic number.

It is an amenable number.

998598001 is a deficient number, since it is larger than the sum of its proper divisors (3658199).

998598001 is a wasteful number, since it uses less digits than its factorization.

998598001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635.

The product of its (nonzero) digits is 233280, while the sum is 49.

The square root of 998598001 is about 31600.6012759251. The cubic root of 998598001 is about 999.5324484296.

The spelling of 998598001 in words is "nine hundred ninety-eight million, five hundred ninety-eight thousand, one".