765505607 has 2 divisors, whose sum is σ = 765505608. Its totient is φ = 765505606.

The previous prime is 765505577. The next prime is 765505621. The reversal of 765505607 is 706505567.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-765505607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (765505627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382752803 + 382752804.

It is an arithmetic number, because the mean of its divisors is an integer number (382752804).

Almost surely, 2^765505607 is an apocalyptic number.

765505607 is a deficient number, since it is larger than the sum of its proper divisors (1).

765505607 is an equidigital number, since it uses as much as digits as its factorization.

765505607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 220500, while the sum is 41.

The square root of 765505607 is about 27667.7719919765. The cubic root of 765505607 is about 914.7788717834.

The spelling of 765505607 in words is "seven hundred sixty-five million, five hundred five thousand, six hundred seven".