2047661 has 24 divisors (see below), whose sum is σ = 2708640. Its totient is φ = 1528800.

The previous prime is 2047651. The next prime is 2047699. The reversal of 2047661 is 1667402.

2047661 = 5³ + 6³ + ... + 53³.

It is not a de Polignac number, because 2047661 - 2⁶ = 2047597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2047661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2047651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15566 + ... + 15696.

It is an arithmetic number, because the mean of its divisors is an integer number (112860).

2^2047661 is an apocalyptic number.

It is an amenable number.

2047661 is a deficient number, since it is larger than the sum of its proper divisors (660979).

2047661 is a wasteful number, since it uses less digits than its factorization.

2047661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2047661 is about 1430.9650589724. The cubic root of 2047661 is about 126.9850768834.

The spelling of 2047661 in words is "two million, forty-seven thousand, six hundred sixty-one".