64812133 has 2 divisors, whose sum is σ = 64812134. Its totient is φ = 64812132.

The previous prime is 64812113. The next prime is 64812157. The reversal of 64812133 is 33121846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36264484 + 28547649 = 6022^2 + 5343^2 .

It is a cyclic number.

It is not a de Polignac number, because 64812133 - 2¹⁷ = 64681061 is a prime.

It is a super-2 number, since 2×64812133² = 8401225168019378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64812113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32406066 + 32406067.

It is an arithmetic number, because the mean of its divisors is an integer number (32406067).

Almost surely, 2^64812133 is an apocalyptic number.

It is an amenable number.

64812133 is a deficient number, since it is larger than the sum of its proper divisors (1).

64812133 is an equidigital number, since it uses as much as digits as its factorization.

64812133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 64812133 is about 8050.5983007476. The cubic root of 64812133 is about 401.6848370959.

Adding to 64812133 its reverse (33121846), we get a palindrome (97933979).

The spelling of 64812133 in words is "sixty-four million, eight hundred twelve thousand, one hundred thirty-three".