641734 has 4 divisors (see below), whose sum is σ = 962604. Its totient is φ = 320866.

The previous prime is 641713. The next prime is 641747. The reversal of 641734 is 437146.

641734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 641699 and 641708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160432 + ... + 160435.

It is an arithmetic number, because the mean of its divisors is an integer number (240651).

2⁶⁴¹⁷³⁴ is an apocalyptic number.

641734 is a deficient number, since it is larger than the sum of its proper divisors (320870).

641734 is a wasteful number, since it uses less digits than its factorization.

641734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320869.

The product of its digits is 2016, while the sum is 25.

The square root of 641734 is about 801.0830169215. The cubic root of 641734 is about 86.2551463708.

The spelling of 641734 in words is "six hundred forty-one thousand, seven hundred thirty-four".