90066998 has 16 divisors (see below), whose sum is σ = 157552800. Its totient is φ = 38599848.

The previous prime is 90066971. The next prime is 90067007. The reversal of 90066998 is 89966009.

It is a happy number.

It is a super-2 number, since 2×90066998² = 16224128257464008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64961 + ... + 66332.

It is an arithmetic number, because the mean of its divisors is an integer number (9847050).

Almost surely, 2^90066998 is an apocalyptic number.

90066998 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

90066998 is a deficient number, since it is larger than the sum of its proper divisors (67485802).

90066998 is a wasteful number, since it uses less digits than its factorization.

90066998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131316 (or 131302 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 90066998 is about 9490.3634282360. The cubic root of 90066998 is about 448.2516489827.

The spelling of 90066998 in words is "ninety million, sixty-six thousand, nine hundred ninety-eight".