766481783 has 2 divisors, whose sum is σ = 766481784. Its totient is φ = 766481782.

The previous prime is 766481773. The next prime is 766481791. The reversal of 766481783 is 387184667.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-766481783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766481713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383240891 + 383240892.

It is an arithmetic number, because the mean of its divisors is an integer number (383240892).

Almost surely, 2^766481783 is an apocalyptic number.

766481783 is a deficient number, since it is larger than the sum of its proper divisors (1).

766481783 is an equidigital number, since it uses as much as digits as its factorization.

766481783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 50.

The square root of 766481783 is about 27685.4074017342. The cubic root of 766481783 is about 915.1675499159.

The spelling of 766481783 in words is "seven hundred sixty-six million, four hundred eighty-one thousand, seven hundred eighty-three".