646124 has 6 divisors (see below), whose sum is σ = 1130724. Its totient is φ = 323060.

The previous prime is 646103. The next prime is 646147. The reversal of 646124 is 421646.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 646124.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 80762 + ... + 80769.

It is an arithmetic number, because the mean of its divisors is an integer number (188454).

2⁶⁴⁶¹²⁴ is an apocalyptic number.

It is an amenable number.

646124 is a deficient number, since it is larger than the sum of its proper divisors (484600).

646124 is a wasteful number, since it uses less digits than its factorization.

646124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161535 (or 161533 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 646124 is about 803.8183874483. The cubic root of 646124 is about 86.4513854709.

The spelling of 646124 in words is "six hundred forty-six thousand, one hundred twenty-four".