766542313 has 2 divisors, whose sum is σ = 766542314. Its totient is φ = 766542312.

The previous prime is 766542307. The next prime is 766542347. The reversal of 766542313 is 313245667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 727003369 + 39538944 = 26963^2 + 6288^2 .

It is a cyclic number.

It is not a de Polignac number, because 766542313 - 2¹³ = 766534121 is a prime.

It is not a weakly prime, because it can be changed into another prime (766542353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383271156 + 383271157.

It is an arithmetic number, because the mean of its divisors is an integer number (383271157).

Almost surely, 2^766542313 is an apocalyptic number.

It is an amenable number.

766542313 is a deficient number, since it is larger than the sum of its proper divisors (1).

766542313 is an equidigital number, since it uses as much as digits as its factorization.

766542313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

The square root of 766542313 is about 27686.5005553248. The cubic root of 766542313 is about 915.1916399138.

The spelling of 766542313 in words is "seven hundred sixty-six million, five hundred forty-two thousand, three hundred thirteen".