98666978 has 8 divisors (see below), whose sum is σ = 148042668. Its totient is φ = 49319424.

The previous prime is 98666969. The next prime is 98666993. The reversal of 98666978 is 87966689.

It can be written as a sum of positive squares in 2 ways, for example, as 77387209 + 21279769 = 8797^2 + 4613^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 9650 + ... + 17042.

Almost surely, 2^98666978 is an apocalyptic number.

98666978 is a deficient number, since it is larger than the sum of its proper divisors (49375690).

98666978 is a wasteful number, since it uses less digits than its factorization.

98666978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14068.

The product of its digits is 7838208, while the sum is 59.

The square root of 98666978 is about 9933.1252886491. The cubic root of 98666978 is about 462.0872039184.

The spelling of 98666978 in words is "ninety-eight million, six hundred sixty-six thousand, nine hundred seventy-eight".