766856941 has 2 divisors, whose sum is σ = 766856942. Its totient is φ = 766856940.

The previous prime is 766856933. The next prime is 766856963. The reversal of 766856941 is 149658667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 747803716 + 19053225 = 27346^2 + 4365^2 .

It is a cyclic number.

It is not a de Polignac number, because 766856941 - 2³ = 766856933 is a prime.

It is a super-3 number, since 3×766856941³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766856971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383428470 + 383428471.

It is an arithmetic number, because the mean of its divisors is an integer number (383428471).

Almost surely, 2^766856941 is an apocalyptic number.

It is an amenable number.

766856941 is a deficient number, since it is larger than the sum of its proper divisors (1).

766856941 is an equidigital number, since it uses as much as digits as its factorization.

766856941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 52.

The square root of 766856941 is about 27692.1819472572. The cubic root of 766856941 is about 915.3168365375.

The spelling of 766856941 in words is "seven hundred sixty-six million, eight hundred fifty-six thousand, nine hundred forty-one".