64621212 has 24 divisors (see below), whose sum is σ = 151062912. Its totient is φ = 21500400.

The previous prime is 64621201. The next prime is 64621213. The reversal of 64621212 is 21212646.

64621212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64621213) 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 7 ways as a sum of consecutive naturals, for example, 2137 + ... + 11567.

It is an arithmetic number, because the mean of its divisors is an integer number (6294288).

Almost surely, 2^64621212 is an apocalyptic number.

It is an amenable number.

64621212 is an abundant number, since it is smaller than the sum of its proper divisors (86441700).

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

64621212 is a wasteful number, since it uses less digits than its factorization.

64621212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009 (or 10007 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 64621212 is about 8038.7319895615. The cubic root of 64621212 is about 401.2900267714.

Adding to 64621212 its reverse (21212646), we get a palindrome (85833858).

The spelling of 64621212 in words is "sixty-four million, six hundred twenty-one thousand, two hundred twelve".