64604077 has 2 divisors, whose sum is σ = 64604078. Its totient is φ = 64604076.

The previous prime is 64604039. The next prime is 64604081. The reversal of 64604077 is 77040646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50608996 + 13995081 = 7114^2 + 3741^2 .

It is a cyclic number.

It is not a de Polignac number, because 64604077 - 2¹⁹ = 64079789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64604027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32302038 + 32302039.

It is an arithmetic number, because the mean of its divisors is an integer number (32302039).

Almost surely, 2^64604077 is an apocalyptic number.

It is an amenable number.

64604077 is a deficient number, since it is larger than the sum of its proper divisors (1).

64604077 is an equidigital number, since it uses as much as digits as its factorization.

64604077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 64604077 is about 8037.6661413622. Note that the first 3 decimals coincide. The cubic root of 64604077 is about 401.2545548666.

The spelling of 64604077 in words is "sixty-four million, six hundred four thousand, seventy-seven".