820674 has 24 divisors (see below), whose sum is σ = 1797120. Its totient is φ = 270648.

The previous prime is 820657. The next prime is 820679. The reversal of 820674 is 476028.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (820679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2107 + ... + 2465.

It is an arithmetic number, because the mean of its divisors is an integer number (74880).

2⁸²⁰⁶⁷⁴ is an apocalyptic number.

820674 is an abundant number, since it is smaller than the sum of its proper divisors (976446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

820674 is a wasteful number, since it uses less digits than its factorization.

820674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 820674 is about 905.9105916149. The cubic root of 820674 is about 93.6246538169.

The spelling of 820674 in words is "eight hundred twenty thousand, six hundred seventy-four".