820085746 has 16 divisors (see below), whose sum is σ = 1359120384. Its totient is φ = 369143104.

The previous prime is 820085737. The next prime is 820085753. The reversal of 820085746 is 647580028.

It is a junction number, because it is equal to n+sod(n) for n = 820085699 and 820085708.

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, 523570 + ... + 525133.

It is an arithmetic number, because the mean of its divisors is an integer number (84945024).

Almost surely, 2^820085746 is an apocalyptic number.

820085746 is a deficient number, since it is larger than the sum of its proper divisors (539034638).

820085746 is a wasteful number, since it uses less digits than its factorization.

820085746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048745.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 820085746 is about 28637.1392775186. The cubic root of 820085746 is about 936.0227861414.

The spelling of 820085746 in words is "eight hundred twenty million, eighty-five thousand, seven hundred forty-six".