6445682 has 4 divisors (see below), whose sum is σ = 9668526. Its totient is φ = 3222840.

The previous prime is 6445661. The next prime is 6445711. The reversal of 6445682 is 2865446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2865446 = 2 ⋅1432723.

It can be written as a sum of positive squares in only one way, i.e., 5148361 + 1297321 = 2269^2 + 1139^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611419 + ... + 1611422.

Almost surely, 2^6445682 is an apocalyptic number.

6445682 is a deficient number, since it is larger than the sum of its proper divisors (3222844).

6445682 is a wasteful number, since it uses less digits than its factorization.

6445682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222843.

The product of its digits is 46080, while the sum is 35.

The square root of 6445682 is about 2538.8347720953. The cubic root of 6445682 is about 186.1042503415.

The spelling of 6445682 in words is "six million, four hundred forty-five thousand, six hundred eighty-two".