64351140 has 192 divisors, whose sum is σ = 218792448. Its totient is φ = 13824000.

The previous prime is 64351121. The next prime is 64351141. The reversal of 64351140 is 4115346.

It is a self number, because there is not a number n which added to its sum of digits gives 64351140.

It is not an unprimeable number, because it can be changed into a prime (64351141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 637090 + ... + 637190.

It is an arithmetic number, because the mean of its divisors is an integer number (1139544).

Almost surely, 2^64351140 is an apocalyptic number.

64351140 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 64351140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109396224).

64351140 is an abundant number, since it is smaller than the sum of its proper divisors (154441308).

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

64351140 is a wasteful number, since it uses less digits than its factorization.

64351140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 64351140 is about 8021.9162299291. The cubic root of 64351140 is about 400.7302078468.

Adding to 64351140 its reverse (4115346), we get a palindrome (68466486).

The spelling of 64351140 in words is "sixty-four million, three hundred fifty-one thousand, one hundred forty".