6894453561 has 8 divisors (see below), whose sum is σ = 9208538784. Its totient is φ = 4588335360.

The previous prime is 6894453541. The next prime is 6894453611. The reversal of 6894453561 is 1653544986.

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

It is not a de Polignac number, because 6894453561 - 2⁵ = 6894453529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6894453541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1989735 + ... + 1993196.

It is an arithmetic number, because the mean of its divisors is an integer number (1151067348).

Almost surely, 2^6894453561 is an apocalyptic number.

It is an amenable number.

6894453561 is a deficient number, since it is larger than the sum of its proper divisors (2314085223).

6894453561 is a wasteful number, since it uses less digits than its factorization.

6894453561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983511.

The product of its digits is 3110400, while the sum is 51.

The square root of 6894453561 is about 83032.8462778436. The cubic root of 6894453561 is about 1903.2680194254.

The spelling of 6894453561 in words is "six billion, eight hundred ninety-four million, four hundred fifty-three thousand, five hundred sixty-one".