766672481 has 2 divisors, whose sum is σ = 766672482. Its totient is φ = 766672480.

The previous prime is 766672447. The next prime is 766672541. The reversal of 766672481 is 184276667.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 440328256 + 326344225 = 20984^2 + 18065^2 .

It is a cyclic number.

It is not a de Polignac number, because 766672481 - 2²² = 762478177 is a prime.

It is a super-2 number, since 2×766672481² = 1175573386245390722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (766612481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383336240 + 383336241.

It is an arithmetic number, because the mean of its divisors is an integer number (383336241).

Almost surely, 2^766672481 is an apocalyptic number.

It is an amenable number.

766672481 is a deficient number, since it is larger than the sum of its proper divisors (1).

766672481 is an equidigital number, since it uses as much as digits as its factorization.

766672481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 47.

The square root of 766672481 is about 27688.8512040496. The cubic root of 766672481 is about 915.2434404562.

The spelling of 766672481 in words is "seven hundred sixty-six million, six hundred seventy-two thousand, four hundred eighty-one".