2561069 has 8 divisors (see below), whose sum is σ = 2936640. Its totient is φ = 2187936.

The previous prime is 2561063. The next prime is 2561071. The reversal of 2561069 is 9601652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2561069 - 2¹⁶ = 2495533 is a prime.

It is a super-2 number, since 2×2561069² = 13118148845522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3662 + ... + 4304.

It is an arithmetic number, because the mean of its divisors is an integer number (367080).

2^2561069 is an apocalyptic number.

It is an amenable number.

2561069 is a deficient number, since it is larger than the sum of its proper divisors (375571).

2561069 is an equidigital number, since it uses as much as digits as its factorization.

2561069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 2561069 is about 1600.3340276330. The cubic root of 2561069 is about 136.8171143790.

The spelling of 2561069 in words is "two million, five hundred sixty-one thousand, sixty-nine".