646134000 has 160 divisors (see below), whose sum is σ = 2103776064. Its totient is φ = 170598400.

The previous prime is 646133987. The next prime is 646134017. The reversal of 646134000 is 431646.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 677524 + ... + 678476.

Almost surely, 2^646134000 is an apocalyptic number.

646134000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646134000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1051888032).

646134000 is an abundant number, since it is smaller than the sum of its proper divisors (1457642064).

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

646134000 is a wasteful number, since it uses less digits than its factorization.

646134000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 1076 counting only the distinct ones).

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

The square root of 646134000 is about 25419.1659973336. The cubic root of 646134000 is about 864.5183146861.

Adding to 646134000 its reverse (431646), we get a palindrome (646565646).

The spelling of 646134000 in words is "six hundred forty-six million, one hundred thirty-four thousand".