64750663 has 2 divisors, whose sum is σ = 64750664. Its totient is φ = 64750662.

The previous prime is 64750657. The next prime is 64750709. The reversal of 64750663 is 36605746.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64750663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64751663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32375331 + 32375332.

It is an arithmetic number, because the mean of its divisors is an integer number (32375332).

Almost surely, 2^64750663 is an apocalyptic number.

64750663 is a deficient number, since it is larger than the sum of its proper divisors (1).

64750663 is an equidigital number, since it uses as much as digits as its factorization.

64750663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 64750663 is about 8046.7796664256. The cubic root of 64750663 is about 401.5578064716.

The spelling of 64750663 in words is "sixty-four million, seven hundred fifty thousand, six hundred sixty-three".