998458617 has 16 divisors (see below), whose sum is σ = 1434484800. Its totient is φ = 614092992.

The previous prime is 998458583. The next prime is 998458631. The reversal of 998458617 is 716854899.

It is not a de Polignac number, because 998458617 - 2¹² = 998454521 is a prime.

It is a super-3 number, since 3×998458617³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (998458697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75763 + ... + 87959.

It is an arithmetic number, because the mean of its divisors is an integer number (89655300).

Almost surely, 2^998458617 is an apocalyptic number.

It is an amenable number.

998458617 is a deficient number, since it is larger than the sum of its proper divisors (436026183).

998458617 is a wasteful number, since it uses less digits than its factorization.

998458617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14312.

The product of its digits is 4354560, while the sum is 57.

The square root of 998458617 is about 31598.3957978882. The cubic root of 998458617 is about 999.4859414558.

The spelling of 998458617 in words is "nine hundred ninety-eight million, four hundred fifty-eight thousand, six hundred seventeen".