6422705 has 4 divisors (see below), whose sum is σ = 7707252. Its totient is φ = 5138160.

The previous prime is 6422701. The next prime is 6422711. The reversal of 6422705 is 5072246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5072246 = 2 ⋅2536123.

It can be written as a sum of positive squares in 2 ways, for example, as 3964081 + 2458624 = 1991^2 + 1568^2 .

It is not a de Polignac number, because 6422705 - 2² = 6422701 is a prime.

It is a super-2 number, since 2×6422705² = 82502279034050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6422701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642266 + ... + 642275.

It is an arithmetic number, because the mean of its divisors is an integer number (1926813).

Almost surely, 2^6422705 is an apocalyptic number.

It is an amenable number.

6422705 is a deficient number, since it is larger than the sum of its proper divisors (1284547).

6422705 is a wasteful number, since it uses less digits than its factorization.

6422705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284546.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 6422705 is about 2534.3056248211. The cubic root of 6422705 is about 185.8828510395.

The spelling of 6422705 in words is "six million, four hundred twenty-two thousand, seven hundred five".