98777680 has 20 divisors (see below), whose sum is σ = 229658292. Its totient is φ = 39511040.

The previous prime is 98777677. The next prime is 98777681. The reversal of 98777680 is 8677789.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 77580864 + 21196816 = 8808^2 + 4604^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98777681) by changing a digit.

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, 617281 + ... + 617440.

Almost surely, 2^98777680 is an apocalyptic number.

It is an amenable number.

98777680 is an abundant number, since it is smaller than the sum of its proper divisors (130880612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

98777680 is a wasteful number, since it uses less digits than its factorization.

98777680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234734 (or 1234728 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 98777680 is about 9938.6960915404. The cubic root of 98777680 is about 462.2599562732.

The spelling of 98777680 in words is "ninety-eight million, seven hundred seventy-seven thousand, six hundred eighty".