646152 has 64 divisors (see below), whose sum is σ = 1848000. Its totient is φ = 186624.

The previous prime is 646147. The next prime is 646157. The reversal of 646152 is 251646.

646152 is nontrivially palindromic in base 15.

It is an interprime number because it is at equal distance from previous prime (646147) and next prime (646157).

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

It is not an unprimeable number, because it can be changed into a prime (646157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5874 + ... + 5982.

It is an arithmetic number, because the mean of its divisors is an integer number (28875).

2⁶⁴⁶¹⁵² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924000).

646152 is an abundant number, since it is smaller than the sum of its proper divisors (1201848).

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

646152 is a wasteful number, since it uses less digits than its factorization.

646152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 146 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 646152 is about 803.8358041292. The cubic root of 646152 is about 86.4526342528.

Adding to 646152 its reverse (251646), we get a palindrome (897798).

It can be divided in two parts, 64 and 6152, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 646152 in words is "six hundred forty-six thousand, one hundred fifty-two".