65461340 has 48 divisors (see below), whose sum is σ = 158300352. Its totient is φ = 22273536.

The previous prime is 65461337. The next prime is 65461343. The reversal of 65461340 is 4316456.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65461337) and next prime (65461343).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65461343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17474 + ... + 20886.

It is an arithmetic number, because the mean of its divisors is an integer number (3297924).

Almost surely, 2^65461340 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 65461340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79150176).

65461340 is an abundant number, since it is smaller than the sum of its proper divisors (92839012).

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

65461340 is a wasteful number, since it uses less digits than its factorization.

65461340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566 (or 3564 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 65461340 is about 8090.8182528098. The cubic root of 65461340 is about 403.0215760563.

Adding to 65461340 its reverse (4316456), we get a palindrome (69777796).

The spelling of 65461340 in words is "sixty-five million, four hundred sixty-one thousand, three hundred forty".