98778611 has 16 divisors (see below), whose sum is σ = 105636960. Its totient is φ = 92198400.

The previous prime is 98778593. The next prime is 98778671. The reversal of 98778611 is 11687789.

It is a cyclic number.

It is not a de Polignac number, because 98778611 - 2¹⁰ = 98777587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98778671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140561 + ... + 141261.

It is an arithmetic number, because the mean of its divisors is an integer number (6602310).

Almost surely, 2^98778611 is an apocalyptic number.

98778611 is a deficient number, since it is larger than the sum of its proper divisors (6858349).

98778611 is a wasteful number, since it uses less digits than its factorization.

98778611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886.

The product of its digits is 169344, while the sum is 47.

The square root of 98778611 is about 9938.7429285599. The cubic root of 98778611 is about 462.2614085671.

The spelling of 98778611 in words is "ninety-eight million, seven hundred seventy-eight thousand, six hundred eleven".