766432553 has 2 divisors, whose sum is σ = 766432554. Its totient is φ = 766432552.

The previous prime is 766432501. The next prime is 766432571. The reversal of 766432553 is 355234667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452327824 + 314104729 = 21268^2 + 17723^2 .

It is an emirp because it is prime and its reverse (355234667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 766432553 - 2¹⁸ = 766170409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 766432553.

It is not a weakly prime, because it can be changed into another prime (766432753) 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, 383216276 + 383216277.

It is an arithmetic number, because the mean of its divisors is an integer number (383216277).

Almost surely, 2^766432553 is an apocalyptic number.

It is an amenable number.

766432553 is a deficient number, since it is larger than the sum of its proper divisors (1).

766432553 is an equidigital number, since it uses as much as digits as its factorization.

766432553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 41.

The square root of 766432553 is about 27684.5182909149. The cubic root of 766432553 is about 915.1479562069.

The spelling of 766432553 in words is "seven hundred sixty-six million, four hundred thirty-two thousand, five hundred fifty-three".