64235340 has 144 divisors (see below), whose sum is σ = 212747808. Its totient is φ = 15593472.

The previous prime is 64235329. The next prime is 64235341. The reversal of 64235340 is 4353246.

64235340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (64235341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 226839 + ... + 227121.

Almost surely, 2^64235340 is an apocalyptic number.

64235340 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 64235340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106373904).

64235340 is an abundant number, since it is smaller than the sum of its proper divisors (148512468).

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

64235340 is a wasteful number, since it uses less digits than its factorization.

64235340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 64235340 is about 8014.6952530960. The cubic root of 64235340 is about 400.4896919266.

Adding to 64235340 its reverse (4353246), we get a palindrome (68588586).

The spelling of 64235340 in words is "sixty-four million, two hundred thirty-five thousand, three hundred forty".