6900545 has 8 divisors (see below), whose sum is σ = 8346624. Its totient is φ = 5476464.

The previous prime is 6900539. The next prime is 6900559. The reversal of 6900545 is 5450096.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6900545 - 2¹⁶ = 6835009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4799 + ... + 6068.

It is an arithmetic number, because the mean of its divisors is an integer number (1043328).

Almost surely, 2^6900545 is an apocalyptic number.

It is an amenable number.

6900545 is a deficient number, since it is larger than the sum of its proper divisors (1446079).

6900545 is a wasteful number, since it uses less digits than its factorization.

6900545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10999.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 6900545 is about 2626.8888442414. Note that the first 4 decimals coincide. The cubic root of 6900545 is about 190.3828384274.

The spelling of 6900545 in words is "six million, nine hundred thousand, five hundred forty-five".