854516645 has 18 divisors (see below), whose sum is σ = 1090705302. Its totient is φ = 642564096.

The previous prime is 854516567. The next prime is 854516651. The reversal of 854516645 is 546615458.

It can be written as a sum of positive squares in 9 ways, for example, as 64288324 + 790228321 = 8018^2 + 28111^2 .

It is not a de Polignac number, because 854516645 - 2⁸ = 854516389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 854516596 and 854516605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1110821 + ... + 1111589.

It is an arithmetic number, because the mean of its divisors is an integer number (60594739).

Almost surely, 2^854516645 is an apocalyptic number.

854516645 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

854516645 is a deficient number, since it is larger than the sum of its proper divisors (236188657).

854516645 is an frugal number, since it uses more digits than its factorization.

854516645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577 (or 791 counting only the distinct ones).

The product of its digits is 576000, while the sum is 44.

The square root of 854516645 is about 29232.1166698548. The cubic root of 854516645 is about 948.9431071714.

The spelling of 854516645 in words is "eight hundred fifty-four million, five hundred sixteen thousand, six hundred forty-five".