64955549 has 2 divisors, whose sum is σ = 64955550. Its totient is φ = 64955548.

The previous prime is 64955543. The next prime is 64955567. The reversal of 64955549 is 94555946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63712324 + 1243225 = 7982^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 64955549 - 2⁴ = 64955533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64955543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32477774 + 32477775.

It is an arithmetic number, because the mean of its divisors is an integer number (32477775).

Almost surely, 2^64955549 is an apocalyptic number.

It is an amenable number.

64955549 is a deficient number, since it is larger than the sum of its proper divisors (1).

64955549 is an equidigital number, since it uses as much as digits as its factorization.

64955549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972000, while the sum is 47.

The square root of 64955549 is about 8059.5005428376. The cubic root of 64955549 is about 401.9809009680.

The spelling of 64955549 in words is "sixty-four million, nine hundred fifty-five thousand, five hundred forty-nine".