6461669 has 4 divisors (see below), whose sum is σ = 6567660. Its totient is φ = 6355680.

The previous prime is 6461657. The next prime is 6461713. The reversal of 6461669 is 9661646.

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 3020644 + 3441025 = 1738^2 + 1855^2 .

It is a cyclic number.

It is not a de Polignac number, because 6461669 - 2¹⁶ = 6396133 is a prime.

It is a super-2 number, since 2×6461669² = 83506332531122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6461269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52904 + ... + 53025.

It is an arithmetic number, because the mean of its divisors is an integer number (1641915).

Almost surely, 2^6461669 is an apocalyptic number.

It is an amenable number.

6461669 is a deficient number, since it is larger than the sum of its proper divisors (105991).

6461669 is a wasteful number, since it uses less digits than its factorization.

6461669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105990.

The product of its digits is 46656, while the sum is 38.

The square root of 6461669 is about 2541.9813138574. The cubic root of 6461669 is about 186.2579859345.

The spelling of 6461669 in words is "six million, four hundred sixty-one thousand, six hundred sixty-nine".