64546849 has 2 divisors, whose sum is σ = 64546850. Its totient is φ = 64546848.

The previous prime is 64546847. The next prime is 64546879. The reversal of 64546849 is 94864546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49801249 + 14745600 = 7057^2 + 3840^2 .

It is a cyclic number.

It is not a de Polignac number, because 64546849 - 2¹ = 64546847 is a prime.

Together with 64546847, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64546799 and 64546808.

It is not a weakly prime, because it can be changed into another prime (64546847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32273424 + 32273425.

It is an arithmetic number, because the mean of its divisors is an integer number (32273425).

Almost surely, 2^64546849 is an apocalyptic number.

It is an amenable number.

64546849 is a deficient number, since it is larger than the sum of its proper divisors (1).

64546849 is an equidigital number, since it uses as much as digits as its factorization.

64546849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 46.

The square root of 64546849 is about 8034.1053640091. The cubic root of 64546849 is about 401.1360392327.

The spelling of 64546849 in words is "sixty-four million, five hundred forty-six thousand, eight hundred forty-nine".