6426618 has 16 divisors (see below), whose sum is σ = 14021856. Its totient is φ = 1947440.

The previous prime is 6426613. The next prime is 6426631. The reversal of 6426618 is 8166246.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (6426611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48621 + ... + 48752.

It is an arithmetic number, because the mean of its divisors is an integer number (876366).

Almost surely, 2^6426618 is an apocalyptic number.

6426618 is an abundant number, since it is smaller than the sum of its proper divisors (7595238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6426618 is a wasteful number, since it uses less digits than its factorization.

6426618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97389.

The product of its digits is 13824, while the sum is 33.

The square root of 6426618 is about 2535.0775136078. The cubic root of 6426618 is about 185.9205927663.

It can be divided in two parts, 642 and 6618, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 6426618 in words is "six million, four hundred twenty-six thousand, six hundred eighteen".