6820654764 has 72 divisors (see below), whose sum is σ = 20196243648. Its totient is φ = 1771596960.

The previous prime is 6820654723. The next prime is 6820654769. The reversal of 6820654764 is 4674560286.

It is not an unprimeable number, because it can be changed into a prime (6820654769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520794 + ... + 533729.

It is an arithmetic number, because the mean of its divisors is an integer number (280503384).

Almost surely, 2^6820654764 is an apocalyptic number.

It is an amenable number.

6820654764 is an abundant number, since it is smaller than the sum of its proper divisors (13375588884).

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

6820654764 is a wasteful number, since it uses less digits than its factorization.

6820654764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054555 (or 1054546 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The square root of 6820654764 is about 82587.2554574857. The cubic root of 6820654764 is about 1896.4527317541.

The spelling of 6820654764 in words is "six billion, eight hundred twenty million, six hundred fifty-four thousand, seven hundred sixty-four".