64955533 has 2 divisors, whose sum is σ = 64955534. Its totient is φ = 64955532.

The previous prime is 64955503. The next prime is 64955543. The reversal of 64955533 is 33555946.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46267204 + 18688329 = 6802^2 + 4323^2 .

It is a cyclic number.

It is not a de Polignac number, because 64955533 - 2¹³ = 64947341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64955503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32477766 + 32477767.

It is an arithmetic number, because the mean of its divisors is an integer number (32477767).

Almost surely, 2^64955533 is an apocalyptic number.

It is an amenable number.

64955533 is a deficient number, since it is larger than the sum of its proper divisors (1).

64955533 is an equidigital number, since it uses as much as digits as its factorization.

64955533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243000, while the sum is 40.

The square root of 64955533 is about 8059.4995502202. The cubic root of 64955533 is about 401.9808679624.

The spelling of 64955533 in words is "sixty-four million, nine hundred fifty-five thousand, five hundred thirty-three".