65098989 has 12 divisors (see below), whose sum is σ = 94370172. Its totient is φ = 43243200.

The previous prime is 65098981. The next prime is 65099063. The reversal of 65098989 is 98989056.

It can be written as a sum of positive squares in 2 ways, for example, as 45118089 + 19980900 = 6717^2 + 4470^2 .

It is not a de Polignac number, because 65098989 - 2³ = 65098981 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65098981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10342 + ... + 15399.

It is an arithmetic number, because the mean of its divisors is an integer number (7864181).

Almost surely, 2^65098989 is an apocalyptic number.

It is an amenable number.

65098989 is a deficient number, since it is larger than the sum of its proper divisors (29271183).

65098989 is a wasteful number, since it uses less digits than its factorization.

65098989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26028 (or 26025 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The square root of 65098989 is about 8068.3944499510. The cubic root of 65098989 is about 402.2765788076.

The spelling of 65098989 in words is "sixty-five million, ninety-eight thousand, nine hundred eighty-nine".