685027755 has 12 divisors (see below), whose sum is σ = 1187381520. Its totient is φ = 365348112.

The previous prime is 685027741. The next prime is 685027769. The reversal of 685027755 is 557720586.

685027755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (685027741) and next prime (685027769).

It is not a de Polignac number, because 685027755 - 2⁷ = 685027627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 15222839 = 685027755 / (6 + 8 + 5 + 0 + 2 + 7 + 7 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 685027755.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7611375 + ... + 7611464.

It is an arithmetic number, because the mean of its divisors is an integer number (98948460).

Almost surely, 2^685027755 is an apocalyptic number.

685027755 is a deficient number, since it is larger than the sum of its proper divisors (502353765).

685027755 is a wasteful number, since it uses less digits than its factorization.

685027755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15222850 (or 15222847 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 45.

The square root of 685027755 is about 26173.0348832534. The cubic root of 685027755 is about 881.5278876163.

The spelling of 685027755 in words is "six hundred eighty-five million, twenty-seven thousand, seven hundred fifty-five".