1684654085 has 8 divisors (see below), whose sum is σ = 2024952216. Its totient is φ = 1345478400.

The previous prime is 1684654079. The next prime is 1684654087. The reversal of 1684654085 is 5804564861.

It can be written as a sum of positive squares in 4 ways, for example, as 544848964 + 1139805121 = 23342^2 + 33761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1684654085 - 2²⁴ = 1667876869 is a prime.

It is a super-2 number, since 2×1684654085² = 5676118772214374450, 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 (1684654087) 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, 277304 + ... + 283313.

It is an arithmetic number, because the mean of its divisors is an integer number (253119027).

Almost surely, 2^1684654085 is an apocalyptic number.

It is an amenable number.

1684654085 is a deficient number, since it is larger than the sum of its proper divisors (340298131).

1684654085 is an equidigital number, since it uses as much as digits as its factorization.

1684654085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561223.

The product of its (nonzero) digits is 921600, while the sum is 47.

The square root of 1684654085 is about 41044.5378217370. The cubic root of 1684654085 is about 1189.8811370580.

The spelling of 1684654085 in words is "one billion, six hundred eighty-four million, six hundred fifty-four thousand, eighty-five".