6765545890 has 16 divisors (see below), whose sum is σ = 12179148408. Its totient is φ = 2705959296.

The previous prime is 6765545873. The next prime is 6765545953. The reversal of 6765545890 is 985455676.

It can be written as a sum of positive squares in 4 ways, for example, as 6682572009 + 82973881 = 81747^2 + 9109^2 .

It is a super-2 number, since 2×6765545890² = 91545222379391784200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105094 + ... + 156766.

Almost surely, 2^6765545890 is an apocalyptic number.

6765545890 is a deficient number, since it is larger than the sum of its proper divisors (5413602518).

6765545890 is a wasteful number, since it uses less digits than its factorization.

6765545890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64773.

The product of its (nonzero) digits is 9072000, while the sum is 55.

The square root of 6765545890 is about 82252.9384885428. The cubic root of 6765545890 is about 1891.3313212620.

The spelling of 6765545890 in words is "six billion, seven hundred sixty-five million, five hundred forty-five thousand, eight hundred ninety".