998511466 has 16 divisors (see below), whose sum is σ = 1563576768. Its totient is φ = 477338400.

The previous prime is 998511421. The next prime is 998511491. The reversal of 998511466 is 664115899.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166846 + ... + 172726.

It is an arithmetic number, because the mean of its divisors is an integer number (97723548).

Almost surely, 2^998511466 is an apocalyptic number.

998511466 is the 16891-st centered heptagonal number.

998511466 is a deficient number, since it is larger than the sum of its proper divisors (565065302).

998511466 is a wasteful number, since it uses less digits than its factorization.

998511466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9597.

The product of its digits is 466560, while the sum is 49.

The square root of 998511466 is about 31599.2320476305. The cubic root of 998511466 is about 999.5035756036.

The spelling of 998511466 in words is "nine hundred ninety-eight million, five hundred eleven thousand, four hundred sixty-six".