821070466 has 8 divisors (see below), whose sum is σ = 1260247824. Its totient is φ = 400987860.

The previous prime is 821070457. The next prime is 821070487. The reversal of 821070466 is 664070128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4773580 + ... + 4773751.

It is an arithmetic number, because the mean of its divisors is an integer number (157530978).

Almost surely, 2^821070466 is an apocalyptic number.

821070466 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

821070466 is a deficient number, since it is larger than the sum of its proper divisors (439177358).

821070466 is a wasteful number, since it uses less digits than its factorization.

821070466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9547376.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 821070466 is about 28654.3271775835. The cubic root of 821070466 is about 936.3972801863.

The spelling of 821070466 in words is "eight hundred twenty-one million, seventy thousand, four hundred sixty-six".