770478516685 has 32 divisors (see below), whose sum is σ = 942057567360. Its totient is φ = 604836460800.

The previous prime is 770478516673. The next prime is 770478516697. The reversal of 770478516685 is 586615874077.

It is an interprime number because it is at equal distance from previous prime (770478516673) and next prime (770478516697).

It is not a de Polignac number, because 770478516685 - 2¹⁵ = 770478483917 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64517815 + ... + 64529755.

It is an arithmetic number, because the mean of its divisors is an integer number (29439298980).

Almost surely, 2^770478516685 is an apocalyptic number.

It is an amenable number.

770478516685 is a deficient number, since it is larger than the sum of its proper divisors (171579050675).

770478516685 is a wasteful number, since it uses less digits than its factorization.

770478516685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13069.

The product of its (nonzero) digits is 79027200, while the sum is 64.

The spelling of 770478516685 in words is "seven hundred seventy billion, four hundred seventy-eight million, five hundred sixteen thousand, six hundred eighty-five".