3406657 has 4 divisors (see below), whose sum is σ = 3415636. Its totient is φ = 3397680.

The previous prime is 3406631. The next prime is 3406661. The reversal of 3406657 is 7566043.

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 746496 + 2660161 = 864^2 + 1631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3406657 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3406687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3894 + ... + 4687.

It is an arithmetic number, because the mean of its divisors is an integer number (853909).

Almost surely, 2^3406657 is an apocalyptic number.

It is an amenable number.

3406657 is a deficient number, since it is larger than the sum of its proper divisors (8979).

3406657 is an equidigital number, since it uses as much as digits as its factorization.

3406657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8978.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 3406657 is about 1845.7131413088. The cubic root of 3406657 is about 150.4675338260.

The spelling of 3406657 in words is "three million, four hundred six thousand, six hundred fifty-seven".