3486686821 has 8 divisors (see below), whose sum is σ = 3497408640. Its totient is φ = 3475978512.

The previous prime is 3486686773. The next prime is 3486686881. The reversal of 3486686821 is 1286866843.

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

It is a cyclic number.

It is not a de Polignac number, because 3486686821 - 2¹⁵ = 3486654053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3486686881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758496 + ... + 763078.

It is an arithmetic number, because the mean of its divisors is an integer number (437176080).

Almost surely, 2^3486686821 is an apocalyptic number.

It is an amenable number.

3486686821 is a deficient number, since it is larger than the sum of its proper divisors (10721819).

3486686821 is a wasteful number, since it uses less digits than its factorization.

3486686821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6755.

The product of its digits is 2654208, while the sum is 52.

The square root of 3486686821 is about 59048.1737312849. The cubic root of 3486686821 is about 1516.3669612254.

The spelling of 3486686821 in words is "three billion, four hundred eighty-six million, six hundred eighty-six thousand, eight hundred twenty-one".