6211490640 has 160 divisors (see below), whose sum is σ = 20323699200. Its totient is φ = 1564992000.

The previous prime is 6211490627. The next prime is 6211490641. The reversal of 6211490640 is 460941126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6211490641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1909015 + ... + 1912265.

It is an arithmetic number, because the mean of its divisors is an integer number (127023120).

Almost surely, 2^6211490640 is an apocalyptic number.

6211490640 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 6211490640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10161849600).

6211490640 is an abundant number, since it is smaller than the sum of its proper divisors (14112208560).

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

6211490640 is a wasteful number, since it uses less digits than its factorization.

6211490640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3705 (or 3699 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 6211490640 is about 78813.0106010423. The cubic root of 6211490640 is about 1838.2247606978.

The spelling of 6211490640 in words is "six billion, two hundred eleven million, four hundred ninety thousand, six hundred forty".