6928641 has 12 divisors (see below), whose sum is σ = 10071568. Its totient is φ = 4589784.

The previous prime is 6928619. The next prime is 6928643. The reversal of 6928641 is 1468296.

6928641 is a `hidden beast` number, since 6 + 9 + 2 + 8 + 641 = 666.

It is not a de Polignac number, because 6928641 - 2⁵ = 6928609 is a prime.

It is a super-2 number, since 2×6928641² = 96012132213762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6928596 and 6928605.

It is not an unprimeable number, because it can be changed into a prime (6928643) 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, 895 + ... + 3828.

Almost surely, 2^6928641 is an apocalyptic number.

It is an amenable number.

6928641 is a deficient number, since it is larger than the sum of its proper divisors (3142927).

6928641 is a wasteful number, since it uses less digits than its factorization.

6928641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4892 (or 4889 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 6928641 is about 2632.2311828561. The cubic root of 6928641 is about 190.6408737475.

It can be divided in two parts, 6928 and 641, that added together give a square (7569 = 87²).

The spelling of 6928641 in words is "six million, nine hundred twenty-eight thousand, six hundred forty-one".