646134 has 16 divisors (see below), whose sum is σ = 1305072. Its totient is φ = 213248.

The previous prime is 646103. The next prime is 646147. The reversal of 646134 is 431646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202 + ... + 1154.

It is an arithmetic number, because the mean of its divisors is an integer number (81567).

2⁶⁴⁶¹³⁴ is an apocalyptic number.

646134 is an abundant number, since it is smaller than the sum of its proper divisors (658938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646134 is a wasteful number, since it uses less digits than its factorization.

646134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071.

The product of its digits is 1728, while the sum is 24.

The square root of 646134 is about 803.8246077348. The cubic root of 646134 is about 86.4518314686.

It can be divided in two parts, 646 and 134, that added together give a triangular number (780 = T₃₉).

The spelling of 646134 in words is "six hundred forty-six thousand, one hundred thirty-four".