820698604 has 24 divisors (see below), whose sum is σ = 1634911488. Its totient is φ = 356825040.

The previous prime is 820698583. The next prime is 820698607. The reversal of 820698604 is 406896028.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (820698607) 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, 404472 + ... + 406495.

It is an arithmetic number, because the mean of its divisors is an integer number (68121312).

Almost surely, 2^820698604 is an apocalyptic number.

It is an amenable number.

820698604 is a deficient number, since it is larger than the sum of its proper divisors (814212884).

820698604 is a wasteful number, since it uses less digits than its factorization.

820698604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811005 (or 811003 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 820698604 is about 28647.8376845444. The cubic root of 820698604 is about 936.2558943731.

The spelling of 820698604 in words is "eight hundred twenty million, six hundred ninety-eight thousand, six hundred four".