820275466 has 16 divisors (see below), whose sum is σ = 1324874880. Its totient is φ = 379468480.

The previous prime is 820275457. The next prime is 820275493. The reversal of 820275466 is 664572028.

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, 202450 + ... + 206461.

It is an arithmetic number, because the mean of its divisors is an integer number (82804680).

Almost surely, 2^820275466 is an apocalyptic number.

820275466 is a deficient number, since it is larger than the sum of its proper divisors (504599414).

820275466 is a wasteful number, since it uses less digits than its factorization.

820275466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408989.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 820275466 is about 28640.4515676691. The cubic root of 820275466 is about 936.0949609319.

The spelling of 820275466 in words is "eight hundred twenty million, two hundred seventy-five thousand, four hundred sixty-six".