854061821 has 8 divisors (see below), whose sum is σ = 866268864. Its totient is φ = 841868640.

The previous prime is 854061781. The next prime is 854061823. The reversal of 854061821 is 128160458.

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 854061821 - 2¹⁸ = 853799677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854061823) 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, 230816 + ... + 234486.

It is an arithmetic number, because the mean of its divisors is an integer number (108283608).

Almost surely, 2^854061821 is an apocalyptic number.

It is an amenable number.

854061821 is a deficient number, since it is larger than the sum of its proper divisors (12207043).

854061821 is a wasteful number, since it uses less digits than its factorization.

854061821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6931.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 854061821 is about 29224.3361087981. The cubic root of 854061821 is about 948.7747161870.

The spelling of 854061821 in words is "eight hundred fifty-four million, sixty-one thousand, eight hundred twenty-one".