65489657 has 8 divisors (see below), whose sum is σ = 66537600. Its totient is φ = 64447344.

The previous prime is 65489629. The next prime is 65489689. The reversal of 65489657 is 75698456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65489657 - 2⁸ = 65489401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65489617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26219 + ... + 28607.

It is an arithmetic number, because the mean of its divisors is an integer number (8317200).

Almost surely, 2^65489657 is an apocalyptic number.

It is an amenable number.

65489657 is a deficient number, since it is larger than the sum of its proper divisors (1047943).

65489657 is a wasteful number, since it uses less digits than its factorization.

65489657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815.

The product of its digits is 1814400, while the sum is 50.

The square root of 65489657 is about 8092.5680102178. The cubic root of 65489657 is about 403.0796801566.

The spelling of 65489657 in words is "sixty-five million, four hundred eighty-nine thousand, six hundred fifty-seven".