64850771 has 2 divisors, whose sum is σ = 64850772. Its totient is φ = 64850770.

The previous prime is 64850759. The next prime is 64850827. The reversal of 64850771 is 17705846.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64850771 is a prime.

It is not a weakly prime, because it can be changed into another prime (64850701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32425385 + 32425386.

It is an arithmetic number, because the mean of its divisors is an integer number (32425386).

Almost surely, 2^64850771 is an apocalyptic number.

64850771 is a deficient number, since it is larger than the sum of its proper divisors (1).

64850771 is an equidigital number, since it uses as much as digits as its factorization.

64850771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 64850771 is about 8052.9976406305. The cubic root of 64850771 is about 401.7646432211.

Adding to 64850771 its sum of digits (38), we get a square (64850809 = 8053²).

The spelling of 64850771 in words is "sixty-four million, eight hundred fifty thousand, seven hundred seventy-one".