64312120 has 32 divisors (see below), whose sum is σ = 144933120. Its totient is φ = 25683840.

The previous prime is 64312097. The next prime is 64312123. The reversal of 64312120 is 2121346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64312123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42985 + ... + 44455.

It is an arithmetic number, because the mean of its divisors is an integer number (4529160).

Almost surely, 2^64312120 is an apocalyptic number.

It is an amenable number.

64312120 is an abundant number, since it is smaller than the sum of its proper divisors (80621000).

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

64312120 is a wasteful number, since it uses less digits than its factorization.

64312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575 (or 2571 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 64312120 is about 8019.4837739096. The cubic root of 64312120 is about 400.6491957920.

Adding to 64312120 its reverse (2121346), we get a palindrome (66433466).

The spelling of 64312120 in words is "sixty-four million, three hundred twelve thousand, one hundred twenty".