6989545 has 4 divisors (see below), whose sum is σ = 8387460. Its totient is φ = 5591632.

The previous prime is 6989537. The next prime is 6989573. The reversal of 6989545 is 5459896.

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 2679769 + 4309776 = 1637^2 + 2076^2 .

It is a cyclic number.

It is not a de Polignac number, because 6989545 - 2³ = 6989537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6989495 and 6989504.

It is an unprimeable number.

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, 698950 + ... + 698959.

It is an arithmetic number, because the mean of its divisors is an integer number (2096865).

Almost surely, 2^6989545 is an apocalyptic number.

It is an amenable number.

6989545 is a deficient number, since it is larger than the sum of its proper divisors (1397915).

6989545 is a wasteful number, since it uses less digits than its factorization.

6989545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397914.

The product of its digits is 388800, while the sum is 46.

The square root of 6989545 is about 2643.7747634774. The cubic root of 6989545 is about 191.1978341783.

The spelling of 6989545 in words is "six million, nine hundred eighty-nine thousand, five hundred forty-five".