64213300 has 18 divisors (see below), whose sum is σ = 139343078. Its totient is φ = 25685280.

The previous prime is 64213283. The next prime is 64213313. The reversal of 64213300 is 331246.

It can be written as a sum of positive squares in 3 ways, for example, as 17673616 + 46539684 = 4204^2 + 6822^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320967 + ... + 321166.

Almost surely, 2^64213300 is an apocalyptic number.

It is an amenable number.

64213300 is an abundant number, since it is smaller than the sum of its proper divisors (75129778).

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

64213300 is a wasteful number, since it uses less digits than its factorization.

64213300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642147 (or 642140 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 64213300 is about 8013.3201608322. The cubic root of 64213300 is about 400.4438822392.

Adding to 64213300 its reverse (331246), we get a palindrome (64544546).

The spelling of 64213300 in words is "sixty-four million, two hundred thirteen thousand, three hundred".