646294 has 16 divisors (see below), whose sum is σ = 1095120. Its totient is φ = 283360.

The previous prime is 646291. The next prime is 646301. The reversal of 646294 is 492646.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132 + ... + 1144.

It is an arithmetic number, because the mean of its divisors is an integer number (68445).

2⁶⁴⁶²⁹⁴ is an apocalyptic number.

646294 is a deficient number, since it is larger than the sum of its proper divisors (448826).

646294 is a wasteful number, since it uses less digits than its factorization.

646294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055.

The product of its digits is 10368, while the sum is 31.

The square root of 646294 is about 803.9241257731. The cubic root of 646294 is about 86.4589668056.

It can be divided in two parts, 6462 and 94, that added together give a palindrome (6556).

The spelling of 646294 in words is "six hundred forty-six thousand, two hundred ninety-four".