853680505 has 16 divisors (see below), whose sum is σ = 1070555904. Its totient is φ = 652861440.

The previous prime is 853680491. The next prime is 853680521. The reversal of 853680505 is 505086358.

It is not a de Polignac number, because 853680505 - 2¹¹ = 853678457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32136 + ... + 52345.

It is an arithmetic number, because the mean of its divisors is an integer number (66909744).

Almost surely, 2^853680505 is an apocalyptic number.

It is an amenable number.

853680505 is a deficient number, since it is larger than the sum of its proper divisors (216875399).

853680505 is a wasteful number, since it uses less digits than its factorization.

853680505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84576.

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 853680505 is about 29217.8114341235. The cubic root of 853680505 is about 948.6334942339.

The spelling of 853680505 in words is "eight hundred fifty-three million, six hundred eighty thousand, five hundred five".