853466665 has 24 divisors (see below), whose sum is σ = 1071924120. Its totient is φ = 651571200.

The previous prime is 853466659. The next prime is 853466671. The reversal of 853466665 is 566664358.

It is an interprime number because it is at equal distance from previous prime (853466659) and next prime (853466671).

It can be written as a sum of positive squares in 12 ways, for example, as 185967769 + 667498896 = 13637^2 + 25836^2 .

It is not a de Polignac number, because 853466665 - 2⁵ = 853466633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1478857 + ... + 1479433.

It is an arithmetic number, because the mean of its divisors is an integer number (44663505).

Almost surely, 2^853466665 is an apocalyptic number.

It is an amenable number.

853466665 is a deficient number, since it is larger than the sum of its proper divisors (218457455).

853466665 is a wasteful number, since it uses less digits than its factorization.

853466665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813 (or 712 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 49.

The square root of 853466665 is about 29214.1517932662. The cubic root of 853466665 is about 948.5542793030.

The spelling of 853466665 in words is "eight hundred fifty-three million, four hundred sixty-six thousand, six hundred sixty-five".