64733897 has 2 divisors, whose sum is σ = 64733898. Its totient is φ = 64733896.

The previous prime is 64733873. The next prime is 64733917. The reversal of 64733897 is 79833746.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58920976 + 5812921 = 7676^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 64733897 - 2⁶ = 64733833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64732897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32366948 + 32366949.

It is an arithmetic number, because the mean of its divisors is an integer number (32366949).

Almost surely, 2^64733897 is an apocalyptic number.

It is an amenable number.

64733897 is a deficient number, since it is larger than the sum of its proper divisors (1).

64733897 is an equidigital number, since it uses as much as digits as its factorization.

64733897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 47.

The square root of 64733897 is about 8045.7378157631. The cubic root of 64733897 is about 401.5231447964.

The spelling of 64733897 in words is "sixty-four million, seven hundred thirty-three thousand, eight hundred ninety-seven".