98855861 has 8 divisors (see below), whose sum is σ = 106564920. Its totient is φ = 91161792.

The previous prime is 98855851. The next prime is 98855921. The reversal of 98855861 is 16855889.

98855861 = 7030² + 7031².

It can be written as a sum of positive squares in 4 ways, for example, as 3422500 + 95433361 = 1850^2 + 9769^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98855861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98855831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12635 + ... + 18903.

It is an arithmetic number, because the mean of its divisors is an integer number (13320615).

Almost surely, 2^98855861 is an apocalyptic number.

98855861 is the 7031-st centered square number.

It is an amenable number.

98855861 is a deficient number, since it is larger than the sum of its proper divisors (7709059).

98855861 is a wasteful number, since it uses less digits than its factorization.

98855861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7495.

The product of its digits is 691200, while the sum is 50.

The square root of 98855861 is about 9942.6284754083. The cubic root of 98855861 is about 462.3818813042.

The spelling of 98855861 in words is "ninety-eight million, eight hundred fifty-five thousand, eight hundred sixty-one".