6164561 has 4 divisors (see below), whose sum is σ = 6638772. Its totient is φ = 5690352.

The previous prime is 6164551. The next prime is 6164563. The reversal of 6164561 is 1654616.

6164561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 712336 + 5452225 = 844^2 + 2335^2 .

It is a cyclic number.

It is not a de Polignac number, because 6164561 - 2²² = 1970257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6164563) 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, 237086 + ... + 237111.

It is an arithmetic number, because the mean of its divisors is an integer number (1659693).

Almost surely, 2^6164561 is an apocalyptic number.

It is an amenable number.

6164561 is a deficient number, since it is larger than the sum of its proper divisors (474211).

6164561 is a wasteful number, since it uses less digits than its factorization.

6164561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474210.

The product of its digits is 4320, while the sum is 29.

The square root of 6164561 is about 2482.8533988136. The cubic root of 6164561 is about 183.3583609542.

It can be divided in two parts, 61 and 64561, that multiplied together give a triangular number (3938221 = T₂₈₀₆).

The spelling of 6164561 in words is "six million, one hundred sixty-four thousand, five hundred sixty-one".