98666694 has 80 divisors (see below), whose sum is σ = 256123440. Its totient is φ = 28153440.

The previous prime is 98666693. The next prime is 98666699. The reversal of 98666694 is 49666689.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 98666694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98666693) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 129274 + ... + 130034.

It is an arithmetic number, because the mean of its divisors is an integer number (3201543).

Almost surely, 2^98666694 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98666694, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128061720).

98666694 is an abundant number, since it is smaller than the sum of its proper divisors (157456746).

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

98666694 is an equidigital number, since it uses as much as digits as its factorization.

98666694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 773 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 98666694 is about 9933.1109930374. The cubic root of 98666694 is about 462.0867605654.

The spelling of 98666694 in words is "ninety-eight million, six hundred sixty-six thousand, six hundred ninety-four".