64604497 has 2 divisors, whose sum is σ = 64604498. Its totient is φ = 64604496.

The previous prime is 64604453. The next prime is 64604537. The reversal of 64604497 is 79440646.

It is an a-pointer prime, because the next prime (64604537) can be obtained adding 64604497 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39992976 + 24611521 = 6324^2 + 4961^2 .

It is a cyclic number.

It is not a de Polignac number, because 64604497 - 2¹¹ = 64602449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64604797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32302248 + 32302249.

It is an arithmetic number, because the mean of its divisors is an integer number (32302249).

Almost surely, 2^64604497 is an apocalyptic number.

It is an amenable number.

64604497 is a deficient number, since it is larger than the sum of its proper divisors (1).

64604497 is an equidigital number, since it uses as much as digits as its factorization.

64604497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 64604497 is about 8037.6922683069. The cubic root of 64604497 is about 401.2554244017.

The spelling of 64604497 in words is "sixty-four million, six hundred four thousand, four hundred ninety-seven".