2261678 has 8 divisors (see below), whose sum is σ = 3415440. Its totient is φ = 1123200.

The previous prime is 2261653. The next prime is 2261689. The reversal of 2261678 is 8761622.

2261678 = T₉₂ + T₉₃ + ... + T₂₄₂.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁹ + 6 + 1 + 6⁸ + 7⁵ + 8⁵ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3443 + ... + 4046.

It is an arithmetic number, because the mean of its divisors is an integer number (426930).

2^2261678 is an apocalyptic number.

2261678 is a deficient number, since it is larger than the sum of its proper divisors (1153762).

2261678 is a wasteful number, since it uses less digits than its factorization.

2261678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7642.

The product of its digits is 8064, while the sum is 32.

The square root of 2261678 is about 1503.8876287808. The cubic root of 2261678 is about 131.2633824601.

The spelling of 2261678 in words is "two million, two hundred sixty-one thousand, six hundred seventy-eight".