64198033 has 2 divisors, whose sum is σ = 64198034. Its totient is φ = 64198032.

The previous prime is 64198031. The next prime is 64198049. The reversal of 64198033 is 33089146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63632529 + 565504 = 7977^2 + 752^2 .

It is a cyclic number.

It is not a de Polignac number, because 64198033 - 2¹ = 64198031 is a prime.

Together with 64198031, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 64198033.

It is not a weakly prime, because it can be changed into another prime (64198031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32099016 + 32099017.

It is an arithmetic number, because the mean of its divisors is an integer number (32099017).

Almost surely, 2^64198033 is an apocalyptic number.

It is an amenable number.

64198033 is a deficient number, since it is larger than the sum of its proper divisors (1).

64198033 is an equidigital number, since it uses as much as digits as its factorization.

64198033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 64198033 is about 8012.3675028046. The cubic root of 64198033 is about 400.4121439476.

The spelling of 64198033 in words is "sixty-four million, one hundred ninety-eight thousand, thirty-three".