3398257 has 4 divisors (see below), whose sum is σ = 3404916. Its totient is φ = 3391600.

The previous prime is 3398221. The next prime is 3398261. The reversal of 3398257 is 7528933.

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 1115136 + 2283121 = 1056^2 + 1511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3398257 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 (3398267) 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, 2494 + ... + 3607.

It is an arithmetic number, because the mean of its divisors is an integer number (851229).

Almost surely, 2^3398257 is an apocalyptic number.

It is an amenable number.

3398257 is a deficient number, since it is larger than the sum of its proper divisors (6659).

3398257 is an equidigital number, since it uses as much as digits as its factorization.

3398257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6658.

The product of its digits is 45360, while the sum is 37.

The square root of 3398257 is about 1843.4361936341. The cubic root of 3398257 is about 150.3437597413.

It can be divided in two parts, 3398 and 257, that added together give a triangular number (3655 = T₈₅).

The spelling of 3398257 in words is "three million, three hundred ninety-eight thousand, two hundred fifty-seven".