6897545 has 4 divisors (see below), whose sum is σ = 8277060. Its totient is φ = 5518032.

The previous prime is 6897533. The next prime is 6897547. The reversal of 6897545 is 5457986.

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 5004169 + 1893376 = 2237^2 + 1376^2 .

It is a cyclic number.

It is not a de Polignac number, because 6897545 - 2¹⁶ = 6832009 is a prime.

It is a super-2 number, since 2×6897545² = 95152254054050, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6897496 and 6897505.

It is not an unprimeable number, because it can be changed into a prime (6897547) 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, 689750 + ... + 689759.

It is an arithmetic number, because the mean of its divisors is an integer number (2069265).

Almost surely, 2^6897545 is an apocalyptic number.

It is an amenable number.

6897545 is a deficient number, since it is larger than the sum of its proper divisors (1379515).

6897545 is a wasteful number, since it uses less digits than its factorization.

6897545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379514.

The product of its digits is 302400, while the sum is 44.

The square root of 6897545 is about 2626.3177644756. The cubic root of 6897545 is about 190.3552448918.

The spelling of 6897545 in words is "six million, eight hundred ninety-seven thousand, five hundred forty-five".