2290646 has 4 divisors (see below), whose sum is σ = 3435972. Its totient is φ = 1145322.

The previous prime is 2290643. The next prime is 2290649. The reversal of 2290646 is 6460922.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2290643) and next prime (2290649).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2290643) 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 as a sum of consecutive naturals, namely, 572660 + ... + 572663.

It is an arithmetic number, because the mean of its divisors is an integer number (858993).

2^2290646 is an apocalyptic number.

2290646 is a deficient number, since it is larger than the sum of its proper divisors (1145326).

2290646 is a wasteful number, since it uses less digits than its factorization.

2290646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145325.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 2290646 is about 1513.4880243993. The cubic root of 2290646 is about 131.8214221234.

The spelling of 2290646 in words is "two million, two hundred ninety thousand, six hundred forty-six".