670086841 has 4 divisors (see below), whose sum is σ = 709503732. Its totient is φ = 630669952.

The previous prime is 670086829. The next prime is 670086863. The reversal of 670086841 is 148680076.

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

It can be written as a sum of positive squares in 2 ways, for example, as 195021225 + 475065616 = 13965^2 + 21796^2 .

It is a cyclic number.

It is not a de Polignac number, because 670086841 - 2²¹ = 667989689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 670086794 and 670086803.

It is not an unprimeable number, because it can be changed into a prime (670086881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19708420 + ... + 19708453.

It is an arithmetic number, because the mean of its divisors is an integer number (177375933).

Almost surely, 2^670086841 is an apocalyptic number.

It is an amenable number.

670086841 is a deficient number, since it is larger than the sum of its proper divisors (39416891).

670086841 is a wasteful number, since it uses less digits than its factorization.

670086841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39416890.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 670086841 is about 25886.0356369993. The cubic root of 670086841 is about 875.0718160375.

The spelling of 670086841 in words is "six hundred seventy million, eighty-six thousand, eight hundred forty-one".