6909020693 has 16 divisors (see below), whose sum is σ = 7258293360. Its totient is φ = 6569312256.

The previous prime is 6909020689. The next prime is 6909020707. The reversal of 6909020693 is 3960209096.

It can be written as a sum of positive squares in 8 ways, for example, as 4076439409 + 2832581284 = 63847^2 + 53222^2 .

It is a cyclic number.

It is not a de Polignac number, because 6909020693 - 2² = 6909020689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6909020683) 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, 497123 + ... + 510831.

It is an arithmetic number, because the mean of its divisors is an integer number (453643335).

Almost surely, 2^6909020693 is an apocalyptic number.

It is an amenable number.

6909020693 is a deficient number, since it is larger than the sum of its proper divisors (349272667).

6909020693 is a wasteful number, since it uses less digits than its factorization.

6909020693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14056.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 6909020693 is about 83120.5190852415. The cubic root of 6909020693 is about 1904.6075335000.

The spelling of 6909020693 in words is "six billion, nine hundred nine million, twenty thousand, six hundred ninety-three".