2966561 has 4 divisors (see below), whose sum is σ = 3194772. Its totient is φ = 2738352.

The previous prime is 2966539. The next prime is 2966581. The reversal of 2966561 is 1656692.

It is a happy number.

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 776161 + 2190400 = 881^2 + 1480^2 .

It is a cyclic number.

It is not a de Polignac number, because 2966561 - 2¹⁰ = 2965537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2966531) 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, 114086 + ... + 114111.

It is an arithmetic number, because the mean of its divisors is an integer number (798693).

2^2966561 is an apocalyptic number.

It is an amenable number.

2966561 is a deficient number, since it is larger than the sum of its proper divisors (228211).

2966561 is a wasteful number, since it uses less digits than its factorization.

2966561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228210.

The product of its digits is 19440, while the sum is 35.

The square root of 2966561 is about 1722.3707498678. The cubic root of 2966561 is about 143.6870938368.

The spelling of 2966561 in words is "two million, nine hundred sixty-six thousand, five hundred sixty-one".