820260475 has 24 divisors (see below), whose sum is σ = 1045178640. Its totient is φ = 638238720.

The previous prime is 820260451. The next prime is 820260481. The reversal of 820260475 is 574062028.

It is not a de Polignac number, because 820260475 - 2¹¹ = 820258427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 820260475.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274791 + ... + 277759.

It is an arithmetic number, because the mean of its divisors is an integer number (43549110).

Almost surely, 2^820260475 is an apocalyptic number.

820260475 is a deficient number, since it is larger than the sum of its proper divisors (224918165).

820260475 is a wasteful number, since it uses less digits than its factorization.

820260475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279 (or 3274 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 820260475 is about 28640.1898562143. The cubic root of 820260475 is about 936.0892583415.

The spelling of 820260475 in words is "eight hundred twenty million, two hundred sixty thousand, four hundred seventy-five".