64775653 has 2 divisors, whose sum is σ = 64775654. Its totient is φ = 64775652.

The previous prime is 64775651. The next prime is 64775657. The reversal of 64775653 is 35657746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54420129 + 10355524 = 7377^2 + 3218^2 .

It is a cyclic number.

It is not a de Polignac number, because 64775653 - 2¹ = 64775651 is a prime.

Together with 64775651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64775651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32387826 + 32387827.

It is an arithmetic number, because the mean of its divisors is an integer number (32387827).

Almost surely, 2^64775653 is an apocalyptic number.

It is an amenable number.

64775653 is a deficient number, since it is larger than the sum of its proper divisors (1).

64775653 is an equidigital number, since it uses as much as digits as its factorization.

64775653 is an evil number, because the sum of its binary digits is even.

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

The square root of 64775653 is about 8048.3323117277. The cubic root of 64775653 is about 401.6094591674.

The spelling of 64775653 in words is "sixty-four million, seven hundred seventy-five thousand, six hundred fifty-three".