820700474 has 16 divisors (see below), whose sum is σ = 1343887200. Its totient is φ = 372789360.

The previous prime is 820700453. The next prime is 820700509. The reversal of 820700474 is 474007028.

It is a self number, because there is not a number n which added to its sum of digits gives 820700474.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22037 + ... + 46119.

It is an arithmetic number, because the mean of its divisors is an integer number (83992950).

Almost surely, 2^820700474 is an apocalyptic number.

820700474 is a deficient number, since it is larger than the sum of its proper divisors (523186726).

820700474 is a wasteful number, since it uses less digits than its factorization.

820700474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25645.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 820700474 is about 28647.8703222421. The cubic root of 820700474 is about 936.2566054734.

The spelling of 820700474 in words is "eight hundred twenty million, seven hundred thousand, four hundred seventy-four".