64565737 has 2 divisors, whose sum is σ = 64565738. Its totient is φ = 64565736.

The previous prime is 64565729. The next prime is 64565741. The reversal of 64565737 is 73756546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50993881 + 13571856 = 7141^2 + 3684^2 .

It is a cyclic number.

It is not a de Polignac number, because 64565737 - 2³ = 64565729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64565693 and 64565702.

It is not a weakly prime, because it can be changed into another prime (64565797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32282868 + 32282869.

It is an arithmetic number, because the mean of its divisors is an integer number (32282869).

Almost surely, 2^64565737 is an apocalyptic number.

It is an amenable number.

64565737 is a deficient number, since it is larger than the sum of its proper divisors (1).

64565737 is an equidigital number, since it uses as much as digits as its factorization.

64565737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529200, while the sum is 43.

The square root of 64565737 is about 8035.2807667187. The cubic root of 64565737 is about 401.1751628496.

The spelling of 64565737 in words is "sixty-four million, five hundred sixty-five thousand, seven hundred thirty-seven".