2317661 has 4 divisors (see below), whose sum is σ = 2454012. Its totient is φ = 2181312.

The previous prime is 2317631. The next prime is 2317669. The reversal of 2317661 is 1667132.

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 755161 + 1562500 = 869^2 + 1250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2317661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2317661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2317669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68150 + ... + 68183.

It is an arithmetic number, because the mean of its divisors is an integer number (613503).

2^2317661 is an apocalyptic number.

It is an amenable number.

2317661 is a deficient number, since it is larger than the sum of its proper divisors (136351).

2317661 is a wasteful number, since it uses less digits than its factorization.

2317661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136350.

The product of its digits is 1512, while the sum is 26.

The square root of 2317661 is about 1522.3866131834. The cubic root of 2317661 is about 132.3376152402.

The spelling of 2317661 in words is "two million, three hundred seventeen thousand, six hundred sixty-one".