821826485 has 8 divisors (see below), whose sum is σ = 986490240. Its totient is φ = 657262224.

The previous prime is 821826479. The next prime is 821826503. The reversal of 821826485 is 584628128.

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

It is a cyclic number.

It is not a de Polignac number, because 821826485 - 2⁴ = 821826469 is a prime.

It is a congruent number.

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, 5297 + ... + 40886.

It is an arithmetic number, because the mean of its divisors is an integer number (123311280).

Almost surely, 2^821826485 is an apocalyptic number.

It is an amenable number.

821826485 is a deficient number, since it is larger than the sum of its proper divisors (164663755).

821826485 is a wasteful number, since it uses less digits than its factorization.

821826485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49747.

The product of its digits is 245760, while the sum is 44.

The square root of 821826485 is about 28667.5161986524. The cubic root of 821826485 is about 936.6845949352.

The spelling of 821826485 in words is "eight hundred twenty-one million, eight hundred twenty-six thousand, four hundred eighty-five".