65440098 has 24 divisors (see below), whose sum is σ = 143383500. Its totient is φ = 21567744.

The previous prime is 65440097. The next prime is 65440103. The reversal of 65440098 is 89004456.

65440098 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 65076489 + 363609 = 8067^2 + 603^2 .

It is not an unprimeable number, because it can be changed into a prime (65440091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18823 + ... + 22026.

Almost surely, 2^65440098 is an apocalyptic number.

65440098 is an abundant number, since it is smaller than the sum of its proper divisors (77943402).

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

65440098 is a wasteful number, since it uses less digits than its factorization.

65440098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40946 (or 40943 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 65440098 is about 8089.5054236956. The cubic root of 65440098 is about 402.9779782600.

The spelling of 65440098 in words is "sixty-five million, four hundred forty thousand, ninety-eight".