3289861657 has 4 divisors (see below), whose sum is σ = 3290794276. Its totient is φ = 3288929040.

The previous prime is 3289861651. The next prime is 3289861667. The reversal of 3289861657 is 7561689823.

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 1656408601 + 1633453056 = 40699^2 + 40416^2 .

It is a cyclic number.

It is not a de Polignac number, because 3289861657 - 2¹⁹ = 3289337369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3289861598 and 3289861607.

It is not an unprimeable number, because it can be changed into a prime (3289861651) 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, 460998 + ... + 468079.

It is an arithmetic number, because the mean of its divisors is an integer number (822698569).

Almost surely, 2^3289861657 is an apocalyptic number.

It is an amenable number.

3289861657 is a deficient number, since it is larger than the sum of its proper divisors (932619).

3289861657 is an equidigital number, since it uses as much as digits as its factorization.

3289861657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932618.

The product of its digits is 4354560, while the sum is 55.

The square root of 3289861657 is about 57357.3156362813. The cubic root of 3289861657 is about 1487.2793403070.

The spelling of 3289861657 in words is "three billion, two hundred eighty-nine million, eight hundred sixty-one thousand, six hundred fifty-seven".