646076 has 12 divisors (see below), whose sum is σ = 1190280. Its totient is φ = 306000.

The previous prime is 646073. The next prime is 646099. The reversal of 646076 is 670646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4175 + ... + 4326.

It is an arithmetic number, because the mean of its divisors is an integer number (99190).

2⁶⁴⁶⁰⁷⁶ is an apocalyptic number.

It is an amenable number.

646076 is a deficient number, since it is larger than the sum of its proper divisors (544204).

646076 is a wasteful number, since it uses less digits than its factorization.

646076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8524 (or 8522 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 646076 is about 803.7885294031. The cubic root of 646076 is about 86.4492446181.

The spelling of 646076 in words is "six hundred forty-six thousand, seventy-six".