64316340 has 108 divisors (see below), whose sum is σ = 214513572. Its totient is φ = 15586560.

The previous prime is 64316333. The next prime is 64316341. The reversal of 64316340 is 4361346.

64316340 is a `hidden beast` number, since 6 + 4 + 316 + 340 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38489616 + 25826724 = 6204^2 + 5082^2 .

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64316341) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20304 + ... + 23256.

Almost surely, 2^64316340 is an apocalyptic number.

64316340 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 64316340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107256786).

64316340 is an abundant number, since it is smaller than the sum of its proper divisors (150197232).

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

64316340 is a wasteful number, since it uses less digits than its factorization.

64316340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990 (or 2974 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 64316340 is about 8019.7468787986. The cubic root of 64316340 is about 400.6579587988.

Adding to 64316340 its reverse (4361346), we get a palindrome (68677686).

The spelling of 64316340 in words is "sixty-four million, three hundred sixteen thousand, three hundred forty".