646262 has 4 divisors (see below), whose sum is σ = 969396. Its totient is φ = 323130.

The previous prime is 646259. The next prime is 646267. The reversal of 646262 is 262646.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 646262.

It is not an unprimeable number, because it can be changed into a prime (646267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161564 + ... + 161567.

It is an arithmetic number, because the mean of its divisors is an integer number (242349).

2⁶⁴⁶²⁶² is an apocalyptic number.

646262 is a deficient number, since it is larger than the sum of its proper divisors (323134).

646262 is a wasteful number, since it uses less digits than its factorization.

646262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323133.

The product of its digits is 3456, while the sum is 26.

The square root of 646262 is about 803.9042231510. The cubic root of 646262 is about 86.4575398324.

The spelling of 646262 in words is "six hundred forty-six thousand, two hundred sixty-two".