6401850 has 144 divisors (see below), whose sum is σ = 20186208. Its totient is φ = 1330560.

The previous prime is 6401849. The next prime is 6401867. The reversal of 6401850 is 581046.

It is a self number, because there is not a number n which added to its sum of digits gives 6401850.

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 71 ways as a sum of consecutive naturals, for example, 95517 + ... + 95583.

It is an arithmetic number, because the mean of its divisors is an integer number (140182).

Almost surely, 2^6401850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6401850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10093104).

6401850 is an abundant number, since it is smaller than the sum of its proper divisors (13784358).

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

6401850 is a wasteful number, since it uses less digits than its factorization.

6401850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 6401850 is about 2530.1877400699. The cubic root of 6401850 is about 185.6814410780.

Adding to 6401850 its reverse (581046), we get a palindrome (6982896).

It can be divided in two parts, 6 and 401850, that added together give a triangular number (401856 = T₈₉₆).

The spelling of 6401850 in words is "six million, four hundred one thousand, eight hundred fifty".