7156897 has 4 divisors (see below), whose sum is σ = 7807536. Its totient is φ = 6506260.

The previous prime is 7156883. The next prime is 7156907. The reversal of 7156897 is 7986517.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7156897 - 2⁷ = 7156769 is a prime.

7156897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7156817) 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 3 ways as a sum of consecutive naturals, for example, 325303 + ... + 325324.

It is an arithmetic number, because the mean of its divisors is an integer number (1951884).

Almost surely, 2^7156897 is an apocalyptic number.

It is an amenable number.

7156897 is a deficient number, since it is larger than the sum of its proper divisors (650639).

7156897 is a wasteful number, since it uses less digits than its factorization.

7156897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650638.

The product of its digits is 105840, while the sum is 43.

The square root of 7156897 is about 2675.2377464442. The cubic root of 7156897 is about 192.7117768254.

The spelling of 7156897 in words is "seven million, one hundred fifty-six thousand, eight hundred ninety-seven".