6820778970 has 24 divisors (see below), whose sum is σ = 17734025556. Its totient is φ = 1818874368.

The previous prime is 6820778963. The next prime is 6820778971. The reversal of 6820778970 is 798770286.

It can be written as a sum of positive squares in 2 ways, for example, as 6450177969 + 370601001 = 80313^2 + 19251^2 .

It is not an unprimeable number, because it can be changed into a prime (6820778971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37893127 + ... + 37893306.

Almost surely, 2^6820778970 is an apocalyptic number.

6820778970 is an abundant number, since it is smaller than the sum of its proper divisors (10913246586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6820778970 is a wasteful number, since it uses less digits than its factorization.

6820778970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75786446 (or 75786443 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The square root of 6820778970 is about 82588.0074223855. The cubic root of 6820778970 is about 1896.4642433263.

The spelling of 6820778970 in words is "six billion, eight hundred twenty million, seven hundred seventy-eight thousand, nine hundred seventy".