7145897 has 12 divisors (see below), whose sum is σ = 7972020. Its totient is φ = 6399360.

The previous prime is 7145867. The next prime is 7145917. The reversal of 7145897 is 7985417.

It can be written as a sum of positive squares in 2 ways, for example, as 5285401 + 1860496 = 2299^2 + 1364^2 .

It is not a de Polignac number, because 7145897 - 2⁸ = 7145641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7145867) 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 in 11 ways as a sum of consecutive naturals, for example, 8429 + ... + 9237.

It is an arithmetic number, because the mean of its divisors is an integer number (664335).

Almost surely, 2^7145897 is an apocalyptic number.

It is an amenable number.

7145897 is a deficient number, since it is larger than the sum of its proper divisors (826123).

7145897 is a wasteful number, since it uses less digits than its factorization.

7145897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904 (or 893 counting only the distinct ones).

The product of its digits is 70560, while the sum is 41.

The square root of 7145897 is about 2673.1810638264. The cubic root of 7145897 is about 192.6129948850.

The spelling of 7145897 in words is "seven million, one hundred forty-five thousand, eight hundred ninety-seven".