6266639 has 4 divisors (see below), whose sum is σ = 6482760. Its totient is φ = 6050520.

The previous prime is 6266629. The next prime is 6266657. The reversal of 6266639 is 9366626.

6266639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6266639 - 2¹⁶ = 6201103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6266609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108017 + ... + 108074.

It is an arithmetic number, because the mean of its divisors is an integer number (1620690).

Almost surely, 2^6266639 is an apocalyptic number.

6266639 is a deficient number, since it is larger than the sum of its proper divisors (216121).

6266639 is a wasteful number, since it uses less digits than its factorization.

6266639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216120.

The product of its digits is 69984, while the sum is 38.

The square root of 6266639 is about 2503.3255880928. The cubic root of 6266639 is about 184.3648930206.

The spelling of 6266639 in words is "six million, two hundred sixty-six thousand, six hundred thirty-nine".