641430 has 24 divisors (see below), whose sum is σ = 1667952. Its totient is φ = 171024.

The previous prime is 641419. The next prime is 641437. The reversal of 641430 is 34146.

641430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641430² = 822864889800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3474 + ... + 3653.

It is an arithmetic number, because the mean of its divisors is an integer number (69498).

2⁶⁴¹⁴³⁰ is an apocalyptic number.

641430 is an abundant number, since it is smaller than the sum of its proper divisors (1026522).

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

641430 is a wasteful number, since it uses less digits than its factorization.

641430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140 (or 7137 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 641430 is about 800.8932513138. The cubic root of 641430 is about 86.2415240568.

Adding to 641430 its reverse (34146), we get a palindrome (675576).

The spelling of 641430 in words is "six hundred forty-one thousand, four hundred thirty".