64225340 has 48 divisors (see below), whose sum is σ = 139490400. Its totient is φ = 24820992.

The previous prime is 64225333. The next prime is 64225373. The reversal of 64225340 is 4352246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169271 + ... + 169649.

It is an arithmetic number, because the mean of its divisors is an integer number (2906050).

Almost surely, 2^64225340 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 64225340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69745200).

64225340 is an abundant number, since it is smaller than the sum of its proper divisors (75265060).

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

64225340 is a wasteful number, since it uses less digits than its factorization.

64225340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 64225340 is about 8014.0713747757. The cubic root of 64225340 is about 400.4689084307.

Adding to 64225340 its reverse (4352246), we get a palindrome (68577586).

The spelling of 64225340 in words is "sixty-four million, two hundred twenty-five thousand, three hundred forty".