6445747 has 16 divisors (see below), whose sum is σ = 8128512. Its totient is φ = 4965120.

The previous prime is 6445741. The next prime is 6445753. The reversal of 6445747 is 7475446.

It is an interprime number because it is at equal distance from previous prime (6445741) and next prime (6445753).

It is a cyclic number.

It is not a de Polignac number, because 6445747 - 2³ = 6445739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6445741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7038 + ... + 7900.

It is an arithmetic number, because the mean of its divisors is an integer number (508032).

Almost surely, 2^6445747 is an apocalyptic number.

6445747 is a deficient number, since it is larger than the sum of its proper divisors (1682765).

6445747 is a wasteful number, since it uses less digits than its factorization.

6445747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978.

The product of its digits is 94080, while the sum is 37.

The square root of 6445747 is about 2538.8475732111. The cubic root of 6445747 is about 186.1048759146.

The spelling of 6445747 in words is "six million, four hundred forty-five thousand, seven hundred forty-seven".