766284289 has 2 divisors, whose sum is σ = 766284290. Its totient is φ = 766284288.

The previous prime is 766284283. The next prime is 766284329. The reversal of 766284289 is 982482667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 751691889 + 14592400 = 27417^2 + 3820^2 .

It is a cyclic number.

It is not a de Polignac number, because 766284289 - 2¹³ = 766276097 is a prime.

It is a super-2 number, since 2×766284289² = 1174383223136471042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (766284283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383142144 + 383142145.

It is an arithmetic number, because the mean of its divisors is an integer number (383142145).

Almost surely, 2^766284289 is an apocalyptic number.

It is an amenable number.

766284289 is a deficient number, since it is larger than the sum of its proper divisors (1).

766284289 is an equidigital number, since it uses as much as digits as its factorization.

766284289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 52.

The square root of 766284289 is about 27681.8404193074. The cubic root of 766284289 is about 915.0889415568.

The spelling of 766284289 in words is "seven hundred sixty-six million, two hundred eighty-four thousand, two hundred eighty-nine".