3398657 has 4 divisors (see below), whose sum is σ = 3598596. Its totient is φ = 3198720.

The previous prime is 3398651. The next prime is 3398669. The reversal of 3398657 is 7568933.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7568933 = 59 ⋅128287.

It can be written as a sum of positive squares in 2 ways, for example, as 1100401 + 2298256 = 1049^2 + 1516^2 .

It is not a de Polignac number, because 3398657 - 2⁸ = 3398401 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 (3398651) 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, 99944 + ... + 99977.

It is an arithmetic number, because the mean of its divisors is an integer number (899649).

Almost surely, 2^3398657 is an apocalyptic number.

It is an amenable number.

3398657 is a deficient number, since it is larger than the sum of its proper divisors (199939).

3398657 is a wasteful number, since it uses less digits than its factorization.

3398657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199938.

The product of its digits is 136080, while the sum is 41.

The square root of 3398657 is about 1843.5446834834. The cubic root of 3398657 is about 150.3496583676.

It can be divided in two parts, 33986 and 57, that added together give a palindrome (34043).

The spelling of 3398657 in words is "three million, three hundred ninety-eight thousand, six hundred fifty-seven".