65489851 has 4 divisors (see below), whose sum is σ = 74845552. Its totient is φ = 56134152.

The previous prime is 65489843. The next prime is 65489861. The reversal of 65489851 is 15898456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65489851 - 2³ = 65489843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65489861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4677840 + ... + 4677853.

It is an arithmetic number, because the mean of its divisors is an integer number (18711388).

Almost surely, 2^65489851 is an apocalyptic number.

65489851 is a deficient number, since it is larger than the sum of its proper divisors (9355701).

65489851 is an equidigital number, since it uses as much as digits as its factorization.

65489851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9355700.

The product of its digits is 345600, while the sum is 46.

The square root of 65489851 is about 8092.5799965153. The cubic root of 65489851 is about 403.0800781705.

The spelling of 65489851 in words is "sixty-five million, four hundred eighty-nine thousand, eight hundred fifty-one".