6428626 has 4 divisors (see below), whose sum is σ = 9642942. Its totient is φ = 3214312.

The previous prime is 6428623. The next prime is 6428627. The reversal of 6428626 is 6268246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6268246 = 2 ⋅3134123.

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 2401 = 2535^2 + 49^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6428591 and 6428600.

It is not an unprimeable number, because it can be changed into a prime (6428623) by changing a digit.

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, 1607155 + ... + 1607158.

Almost surely, 2^6428626 is an apocalyptic number.

6428626 is a deficient number, since it is larger than the sum of its proper divisors (3214316).

6428626 is a wasteful number, since it uses less digits than its factorization.

6428626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214315.

The product of its digits is 27648, while the sum is 34.

The square root of 6428626 is about 2535.4735257936. The cubic root of 6428626 is about 185.9399544106.

The spelling of 6428626 in words is "six million, four hundred twenty-eight thousand, six hundred twenty-six".