6428961 has 24 divisors (see below), whose sum is σ = 11578944. Its totient is φ = 3339360.

The previous prime is 6428957. The next prime is 6428963. The reversal of 6428961 is 1698246.

6428961 is a `hidden beast` number, since 642 + 8 + 9 + 6 + 1 = 666.

6428961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6428961 - 2² = 6428957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6428963) 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, 3946 + ... + 5331.

It is an arithmetic number, because the mean of its divisors is an integer number (482456).

Almost surely, 2^6428961 is an apocalyptic number.

It is an amenable number.

6428961 is a deficient number, since it is larger than the sum of its proper divisors (5149983).

6428961 is a wasteful number, since it uses less digits than its factorization.

6428961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9301 (or 9298 counting only the distinct ones).

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

The square root of 6428961 is about 2535.5395875434. The cubic root of 6428961 is about 185.9431841729.

The spelling of 6428961 in words is "six million, four hundred twenty-eight thousand, nine hundred sixty-one".