767665055 has 4 divisors (see below), whose sum is σ = 921198072. Its totient is φ = 614132040.

The previous prime is 767665033. The next prime is 767665057. The reversal of 767665055 is 550566767.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 767665055 - 2⁶ = 767664991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (767665057) 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 in 3 ways as a sum of consecutive naturals, for example, 76766501 + ... + 76766510.

It is an arithmetic number, because the mean of its divisors is an integer number (230299518).

Almost surely, 2^767665055 is an apocalyptic number.

767665055 is a deficient number, since it is larger than the sum of its proper divisors (153533017).

767665055 is a wasteful number, since it uses less digits than its factorization.

767665055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153533016.

The product of its (nonzero) digits is 1323000, while the sum is 47.

The square root of 767665055 is about 27706.7691187551. The cubic root of 767665055 is about 915.6382440202.

The spelling of 767665055 in words is "seven hundred sixty-seven million, six hundred sixty-five thousand, fifty-five".