65783340 has 120 divisors (see below), whose sum is σ = 235886112. Its totient is φ = 15033600.

The previous prime is 65783327. The next prime is 65783369. The reversal of 65783340 is 4338756.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 65783295 and 65783304.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8440 + ... + 14240.

Almost surely, 2^65783340 is an apocalyptic number.

65783340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65783340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117943056).

65783340 is an abundant number, since it is smaller than the sum of its proper divisors (170102772).

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

65783340 is a wasteful number, since it uses less digits than its factorization.

65783340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5829 (or 5818 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 65783340 is about 8110.6929420365. The cubic root of 65783340 is about 403.6813076656.

The spelling of 65783340 in words is "sixty-five million, seven hundred eighty-three thousand, three hundred forty".