6445197 has 16 divisors (see below), whose sum is σ = 10416960. Its totient is φ = 3906000.

The previous prime is 6445189. The next prime is 6445213. The reversal of 6445197 is 7915446.

6445197 is a `hidden beast` number, since 644 + 5 + 1 + 9 + 7 = 666.

It is not a de Polignac number, because 6445197 - 2³ = 6445189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445147) 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, 10554 + ... + 11147.

It is an arithmetic number, because the mean of its divisors is an integer number (651060).

Almost surely, 2^6445197 is an apocalyptic number.

It is an amenable number.

6445197 is a deficient number, since it is larger than the sum of its proper divisors (3971763).

6445197 is a wasteful number, since it uses less digits than its factorization.

6445197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21721 (or 21715 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 6445197 is about 2538.7392540393. The cubic root of 6445197 is about 186.0995824711.

The spelling of 6445197 in words is "six million, four hundred forty-five thousand, one hundred ninety-seven".