65263340 has 48 divisors (see below), whose sum is σ = 150141600. Its totient is φ = 23718912.

The previous prime is 65263333. The next prime is 65263411. The reversal of 65263340 is 4336256.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6551 + ... + 13169.

It is an arithmetic number, because the mean of its divisors is an integer number (3127950).

Almost surely, 2^65263340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65263340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75070800).

65263340 is an abundant number, since it is smaller than the sum of its proper divisors (84878260).

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

65263340 is a wasteful number, since it uses less digits than its factorization.

65263340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674 (or 6672 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 65263340 is about 8078.5728937728. The cubic root of 65263340 is about 402.6148277759.

Adding to 65263340 its reverse (4336256), we get a palindrome (69599596).

The spelling of 65263340 in words is "sixty-five million, two hundred sixty-three thousand, three hundred forty".