2643722 has 8 divisors (see below), whose sum is σ = 3972672. Its totient is φ = 1319500.

The previous prime is 2643713. The next prime is 2643733. The reversal of 2643722 is 2273462.

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 2³ + 6⁸ + 4⁹ + 3¹¹ + 7 + 2⁹ + 2¹⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 2643691 and 2643700.

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, 1097 + ... + 2547.

It is an arithmetic number, because the mean of its divisors is an integer number (496584).

2^2643722 is an apocalyptic number.

2643722 is a deficient number, since it is larger than the sum of its proper divisors (1328950).

2643722 is a wasteful number, since it uses less digits than its factorization.

2643722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364.

The product of its digits is 4032, while the sum is 26.

The square root of 2643722 is about 1625.9526438368. The cubic root of 2643722 is about 138.2733850986.

The spelling of 2643722 in words is "two million, six hundred forty-three thousand, seven hundred twenty-two".