7091897 has 4 divisors (see below), whose sum is σ = 7106340. Its totient is φ = 7077456.

The previous prime is 7091881. The next prime is 7091899. The reversal of 7091897 is 7981907.

7091897 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 can be written as a sum of positive squares in 2 ways, for example, as 6661561 + 430336 = 2581^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 7091897 - 2⁴ = 7091881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7091899) 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 3 ways as a sum of consecutive naturals, for example, 6458 + ... + 7475.

It is an arithmetic number, because the mean of its divisors is an integer number (1776585).

Almost surely, 2^7091897 is an apocalyptic number.

It is an amenable number.

7091897 is a deficient number, since it is larger than the sum of its proper divisors (14443).

7091897 is a wasteful number, since it uses less digits than its factorization.

7091897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14442.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 7091897 is about 2663.0615839668. The cubic root of 7091897 is about 192.1265893342.

The spelling of 7091897 in words is "seven million, ninety-one thousand, eight hundred ninety-seven".