2291668 has 24 divisors (see below), whose sum is σ = 4318272. Its totient is φ = 1060224.

The previous prime is 2291659. The next prime is 2291677. The reversal of 2291668 is 8661922.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2291659) and next prime (2291677).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4305 + ... + 4807.

It is an arithmetic number, because the mean of its divisors is an integer number (179928).

2^2291668 is an apocalyptic number.

It is an amenable number.

2291668 is a deficient number, since it is larger than the sum of its proper divisors (2026604).

2291668 is a wasteful number, since it uses less digits than its factorization.

2291668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 589 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 2291668 is about 1513.8256174342. The cubic root of 2291668 is about 131.8410237936.

The spelling of 2291668 in words is "two million, two hundred ninety-one thousand, six hundred sixty-eight".