98777776 has 20 divisors (see below), whose sum is σ = 192224800. Its totient is φ = 49171392.

The previous prime is 98777771. The next prime is 98777779. The reversal of 98777776 is 67777789.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 98777776.

It is not an unprimeable number, because it can be changed into a prime (98777771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9816 + ... + 17143.

It is an arithmetic number, because the mean of its divisors is an integer number (9611240).

Almost surely, 2^98777776 is an apocalyptic number.

It is an amenable number.

98777776 is a deficient number, since it is larger than the sum of its proper divisors (93447024).

98777776 is a wasteful number, since it uses less digits than its factorization.

98777776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27196 (or 27190 counting only the distinct ones).

The product of its digits is 7260624, while the sum is 58.

The square root of 98777776 is about 9938.7009211466. The cubic root of 98777776 is about 462.2601060268.

The spelling of 98777776 in words is "ninety-eight million, seven hundred seventy-seven thousand, seven hundred seventy-six".