6435820 has 24 divisors (see below), whose sum is σ = 13681584. Its totient is φ = 2542656.

The previous prime is 6435797. The next prime is 6435833. The reversal of 6435820 is 285346.

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, 279 + ... + 3598.

It is an arithmetic number, because the mean of its divisors is an integer number (570066).

Almost surely, 2^6435820 is an apocalyptic number.

It is an amenable number.

6435820 is an abundant number, since it is smaller than the sum of its proper divisors (7245764).

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

6435820 is a wasteful number, since it uses less digits than its factorization.

6435820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969 (or 3967 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 6435820 is about 2536.8917990328. The cubic root of 6435820 is about 186.0092877006.

The spelling of 6435820 in words is "six million, four hundred thirty-five thousand, eight hundred twenty".