98511666 has 48 divisors (see below), whose sum is σ = 224078400. Its totient is φ = 28816480.

The previous prime is 98511661. The next prime is 98511689. The reversal of 98511666 is 66611589.

It is a happy number.

98511666 is a nontrivial binomial coefficient, being equal to C(14037, 2).

It is not an unprimeable number, because it can be changed into a prime (98511661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18715 + ... + 23393.

It is an arithmetic number, because the mean of its divisors is an integer number (4668300).

Almost surely, 2^98511666 is an apocalyptic number.

98511666 is the 14036-th triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98511666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112039200).

98511666 is an abundant number, since it is smaller than the sum of its proper divisors (125566734).

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

98511666 is a wasteful number, since it uses less digits than its factorization.

98511666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735 (or 4724 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 98511666 is about 9925.3043278279. The cubic root of 98511666 is about 461.8446189495.

The spelling of 98511666 in words is "ninety-eight million, five hundred eleven thousand, six hundred sixty-six".