64331212 has 24 divisors (see below), whose sum is σ = 123313680. Its totient is φ = 29122560.

The previous prime is 64331209. The next prime is 64331233. The reversal of 64331212 is 21213346.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8464 + ... + 14152.

It is an arithmetic number, because the mean of its divisors is an integer number (5138070).

Almost surely, 2^64331212 is an apocalyptic number.

It is an amenable number.

64331212 is a deficient number, since it is larger than the sum of its proper divisors (58982468).

64331212 is a wasteful number, since it uses less digits than its factorization.

64331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5961 (or 5959 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 64331212 is about 8020.6740365134. The cubic root of 64331212 is about 400.6888380743.

Adding to 64331212 its reverse (21213346), we get a palindrome (85544558).

The spelling of 64331212 in words is "sixty-four million, three hundred thirty-one thousand, two hundred twelve".