998966654 has 16 divisors (see below), whose sum is σ = 1771567200. Its totient is φ = 413365344.

The previous prime is 998966653. The next prime is 998966707. The reversal of 998966654 is 456669899.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998966651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229849 + ... + 1230660.

It is an arithmetic number, because the mean of its divisors is an integer number (110722950).

Almost surely, 2^998966654 is an apocalyptic number.

998966654 is a deficient number, since it is larger than the sum of its proper divisors (772600546).

998966654 is a wasteful number, since it uses less digits than its factorization.

998966654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460547.

The product of its digits is 25194240, while the sum is 62.

The square root of 998966654 is about 31606.4337437807. The cubic root of 998966654 is about 999.6554326203.

The spelling of 998966654 in words is "nine hundred ninety-eight million, nine hundred sixty-six thousand, six hundred fifty-four".