646083 has 8 divisors (see below), whose sum is σ = 957200. Its totient is φ = 430704.

The previous prime is 646073. The next prime is 646099. The reversal of 646083 is 380646.

It is not a de Polignac number, because 646083 - 2⁴ = 646067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 23929 = 646083 / (6 + 4 + 6 + 0 + 8 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11938 + ... + 11991.

It is an arithmetic number, because the mean of its divisors is an integer number (119650).

2⁶⁴⁶⁰⁸³ is an apocalyptic number.

646083 is a deficient number, since it is larger than the sum of its proper divisors (311117).

646083 is a wasteful number, since it uses less digits than its factorization.

646083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23938 (or 23932 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 646083 is about 803.7928837704. The cubic root of 646083 is about 86.4495568324.

The spelling of 646083 in words is "six hundred forty-six thousand, eighty-three".