6569961 has 4 divisors (see below), whose sum is σ = 8759952. Its totient is φ = 4379972.

The previous prime is 6569957. The next prime is 6569971. The reversal of 6569961 is 1699656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6569961 - 2² = 6569957 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6569951) 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, 1094991 + ... + 1094996.

It is an arithmetic number, because the mean of its divisors is an integer number (2189988).

Almost surely, 2^6569961 is an apocalyptic number.

It is an amenable number.

6569961 is a deficient number, since it is larger than the sum of its proper divisors (2189991).

6569961 is a wasteful number, since it uses less digits than its factorization.

6569961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189990.

The product of its digits is 87480, while the sum is 42.

The square root of 6569961 is about 2563.1935159094. The cubic root of 6569961 is about 187.2927345254.

The spelling of 6569961 in words is "six million, five hundred sixty-nine thousand, nine hundred sixty-one".