98664778 has 8 divisors (see below), whose sum is σ = 151606980. Its totient is φ = 48129120.

The previous prime is 98664773. The next prime is 98664781. The reversal of 98664778 is 87746689.

It can be written as a sum of positive squares in 2 ways, for example, as 98664489 + 289 = 9933^2 + 17^2 .

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

It is not an unprimeable number, because it can be changed into a prime (98664773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601533 + ... + 601696.

Almost surely, 2^98664778 is an apocalyptic number.

98664778 is a deficient number, since it is larger than the sum of its proper divisors (52942202).

98664778 is a wasteful number, since it uses less digits than its factorization.

98664778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203272.

The product of its digits is 4064256, while the sum is 55.

The square root of 98664778 is about 9933.0145474574. The cubic root of 98664778 is about 462.0837694718.

The spelling of 98664778 in words is "ninety-eight million, six hundred sixty-four thousand, seven hundred seventy-eight".