3400561 has 4 divisors (see below), whose sum is σ = 3600612. Its totient is φ = 3200512.

The previous prime is 3400547. The next prime is 3400577. The reversal of 3400561 is 1650043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1650043 = 23 ⋅71741.

It can be written as a sum of positive squares in 2 ways, for example, as 2624400 + 776161 = 1620^2 + 881^2 .

It is a cyclic number.

It is not a de Polignac number, because 3400561 - 2²¹ = 1303409 is a prime.

It is a super-2 number, since 2×3400561² = 23127630229442, which contains 22 as substring.

It is a Duffinian number.

3400561 is a modest number, since divided by 561 gives 340 as remainder.

It is not an unprimeable number, because it can be changed into a prime (3400531) 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, 100000 + ... + 100033.

It is an arithmetic number, because the mean of its divisors is an integer number (900153).

Almost surely, 2^3400561 is an apocalyptic number.

It is an amenable number.

3400561 is a deficient number, since it is larger than the sum of its proper divisors (200051).

3400561 is a wasteful number, since it uses less digits than its factorization.

3400561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200050.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 3400561 is about 1844.0610076676. The cubic root of 3400561 is about 150.3777294860.

The spelling of 3400561 in words is "three million, four hundred thousand, five hundred sixty-one".