646148 has 12 divisors (see below), whose sum is σ = 1148112. Its totient is φ = 318120.

The previous prime is 646147. The next prime is 646157. The reversal of 646148 is 841646.

It is a self number, because there is not a number n which added to its sum of digits gives 646148.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 646148.

It is not an unprimeable number, because it can be changed into a prime (646147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938 + ... + 1473.

It is an arithmetic number, because the mean of its divisors is an integer number (95676).

2⁶⁴⁶¹⁴⁸ is an apocalyptic number.

It is an amenable number.

646148 is a deficient number, since it is larger than the sum of its proper divisors (501964).

646148 is a wasteful number, since it uses less digits than its factorization.

646148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482 (or 2480 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 646148 is about 803.8333160550. The cubic root of 646148 is about 86.4524558576.

The spelling of 646148 in words is "six hundred forty-six thousand, one hundred forty-eight".