823464261 has 12 divisors (see below), whose sum is σ = 1196095680. Its totient is φ = 545908200.

The previous prime is 823464227. The next prime is 823464263. The reversal of 823464261 is 162464328.

823464261 is a `hidden beast` number, since 8 + 2 + 3 + 4 + 642 + 6 + 1 = 666.

It is not a de Polignac number, because 823464261 - 2¹⁰ = 823463237 is a prime.

It is a super-2 number, since 2×823464261² = 1356186778288552242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823464263) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 253965 + ... + 257186.

It is an arithmetic number, because the mean of its divisors is an integer number (99674640).

Almost surely, 2^823464261 is an apocalyptic number.

It is an amenable number.

823464261 is a deficient number, since it is larger than the sum of its proper divisors (372631419).

823464261 is a wasteful number, since it uses less digits than its factorization.

823464261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511336 (or 511333 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 823464261 is about 28696.0669953219. The cubic root of 823464261 is about 937.3064056787.

The spelling of 823464261 in words is "eight hundred twenty-three million, four hundred sixty-four thousand, two hundred sixty-one".