6199920 has 120 divisors (see below), whose sum is σ = 21278400. Its totient is φ = 1617408.

The previous prime is 6199891. The next prime is 6199927. The reversal of 6199920 is 299916.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6199927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56826 + ... + 56934.

It is an arithmetic number, because the mean of its divisors is an integer number (177320).

Almost surely, 2^6199920 is an apocalyptic number.

6199920 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 6199920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10639200).

6199920 is an abundant number, since it is smaller than the sum of its proper divisors (15078480).

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

6199920 is a wasteful number, since it uses less digits than its factorization.

6199920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 6199920 is about 2489.9638551593. The cubic root of 6199920 is about 183.7082648516.

The spelling of 6199920 in words is "six million, one hundred ninety-nine thousand, nine hundred twenty".