854820623 has 4 divisors (see below), whose sum is σ = 870949368. Its totient is φ = 838691880.

The previous prime is 854820613. The next prime is 854820643. The reversal of 854820623 is 326028458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 854820623 - 2¹⁰ = 854819599 is a prime.

It is a super-2 number, since 2×854820623² = 1461436595012216258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854820613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8064293 + ... + 8064398.

It is an arithmetic number, because the mean of its divisors is an integer number (217737342).

Almost surely, 2^854820623 is an apocalyptic number.

854820623 is a deficient number, since it is larger than the sum of its proper divisors (16128745).

854820623 is a wasteful number, since it uses less digits than its factorization.

854820623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16128744.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 854820623 is about 29237.3155915518. The cubic root of 854820623 is about 949.0556166358.

The spelling of 854820623 in words is "eight hundred fifty-four million, eight hundred twenty thousand, six hundred twenty-three".