65230840 has 16 divisors (see below), whose sum is σ = 146769480. Its totient is φ = 26092320.

The previous prime is 65230817. The next prime is 65230849. The reversal of 65230840 is 4803256.

It is a junction number, because it is equal to n+sod(n) for n = 65230799 and 65230808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65230849) 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 3 ways as a sum of consecutive naturals, for example, 815346 + ... + 815425.

Almost surely, 2^65230840 is an apocalyptic number.

It is an amenable number.

65230840 is an abundant number, since it is smaller than the sum of its proper divisors (81538640).

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

65230840 is a wasteful number, since it uses less digits than its factorization.

65230840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630782 (or 1630778 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 65230840 is about 8076.5611494002. The cubic root of 65230840 is about 402.5479849688.

The spelling of 65230840 in words is "sixty-five million, two hundred thirty thousand, eight hundred forty".