855770770 has 16 divisors (see below), whose sum is σ = 1541858328. Its totient is φ = 341981440.

The previous prime is 855770767. The next prime is 855770777. The reversal of 855770770 is 77077558.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 855738009 + 32761 = 29253^2 + 181^2 .

It is a super-2 number, since 2×855770770² = 1464687221572785800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 855770770.

It is not an unprimeable number, because it can be changed into a prime (855770777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29719 + ... + 50938.

Almost surely, 2^855770770 is an apocalyptic number.

855770770 is a deficient number, since it is larger than the sum of its proper divisors (686087558).

855770770 is a wasteful number, since it uses less digits than its factorization.

855770770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81725.

The product of its (nonzero) digits is 480200, while the sum is 46.

The square root of 855770770 is about 29253.5599543030. The cubic root of 855770770 is about 949.4071166770.

The spelling of 855770770 in words is "eight hundred fifty-five million, seven hundred seventy thousand, seven hundred seventy".