6945890693 has 16 divisors (see below), whose sum is σ = 8050951680. Its totient is φ = 5869259136.

The previous prime is 6945890671. The next prime is 6945890713. The reversal of 6945890693 is 3960985496.

It is a cyclic number.

It is not a de Polignac number, because 6945890693 - 2⁸ = 6945890437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6945890293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365105 + ... + 383657.

It is an arithmetic number, because the mean of its divisors is an integer number (503184480).

Almost surely, 2^6945890693 is an apocalyptic number.

It is an amenable number.

6945890693 is a deficient number, since it is larger than the sum of its proper divisors (1105060987).

6945890693 is a wasteful number, since it uses less digits than its factorization.

6945890693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19316.

The product of its (nonzero) digits is 12597120, while the sum is 59.

The square root of 6945890693 is about 83342.0103729206. The cubic root of 6945890693 is about 1907.9895050347.

The spelling of 6945890693 in words is "six billion, nine hundred forty-five million, eight hundred ninety thousand, six hundred ninety-three".