6920513812 has 6 divisors (see below), whose sum is σ = 12110899178. Its totient is φ = 3460256904.

The previous prime is 6920513801. The next prime is 6920513813. The reversal of 6920513812 is 2183150296.

It can be written as a sum of positive squares in only one way, i.e., 6697130896 + 223382916 = 81836^2 + 14946^2 .

It is a super-2 number, since 2×6920513812² = 95787022844165542688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6920513813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 865064223 + ... + 865064230.

Almost surely, 2^6920513812 is an apocalyptic number.

It is an amenable number.

6920513812 is a deficient number, since it is larger than the sum of its proper divisors (5190385366).

6920513812 is a wasteful number, since it uses less digits than its factorization.

6920513812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730128457 (or 1730128455 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 6920513812 is about 83189.6256272379. The cubic root of 6920513812 is about 1905.6630499187.

The spelling of 6920513812 in words is "six billion, nine hundred twenty million, five hundred thirteen thousand, eight hundred twelve".