998766801 has 16 divisors (see below), whose sum is σ = 1499926720. Its totient is φ = 656722080.

The previous prime is 998766799. The next prime is 998766833. The reversal of 998766801 is 108667899.

It is not a de Polignac number, because 998766801 - 2¹ = 998766799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998766851) 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, 251395 + ... + 255336.

It is an arithmetic number, because the mean of its divisors is an integer number (93745420).

Almost surely, 2^998766801 is an apocalyptic number.

It is an amenable number.

998766801 is a deficient number, since it is larger than the sum of its proper divisors (501159919).

998766801 is a wasteful number, since it uses less digits than its factorization.

998766801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506813 (or 506807 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 998766801 is about 31603.2719983232. The cubic root of 998766801 is about 999.5887645753.

The spelling of 998766801 in words is "nine hundred ninety-eight million, seven hundred sixty-six thousand, eight hundred one".