64757897 has 2 divisors, whose sum is σ = 64757898. Its totient is φ = 64757896.

The previous prime is 64757873. The next prime is 64757911. The reversal of 64757897 is 79875746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64384576 + 373321 = 8024^2 + 611^2 .

It is a cyclic number.

It is not a de Polignac number, because 64757897 - 2¹⁰ = 64756873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64757197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32378948 + 32378949.

It is an arithmetic number, because the mean of its divisors is an integer number (32378949).

Almost surely, 2^64757897 is an apocalyptic number.

It is an amenable number.

64757897 is a deficient number, since it is larger than the sum of its proper divisors (1).

64757897 is an equidigital number, since it uses as much as digits as its factorization.

64757897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 53.

The square root of 64757897 is about 8047.2291504592. The cubic root of 64757897 is about 401.5727600431.

The spelling of 64757897 in words is "sixty-four million, seven hundred fifty-seven thousand, eight hundred ninety-seven".