98665440 has 48 divisors (see below), whose sum is σ = 310797648. Its totient is φ = 26310656.

The previous prime is 98665439. The next prime is 98665447. The reversal of 98665440 is 4456689.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 98665392 and 98665401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98665447) 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, 102297 + ... + 103256.

It is an arithmetic number, because the mean of its divisors is an integer number (6474951).

Almost surely, 2^98665440 is an apocalyptic number.

It is an amenable number.

98665440 is an abundant number, since it is smaller than the sum of its proper divisors (212132208).

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

98665440 is a wasteful number, since it uses less digits than its factorization.

98665440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205571 (or 205563 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 98665440 is about 9933.0478706186. The cubic root of 98665440 is about 462.0848029334.

The spelling of 98665440 in words is "ninety-eight million, six hundred sixty-five thousand, four hundred forty".