6101640 has 96 divisors (see below), whose sum is σ = 21017880. Its totient is φ = 1529856.

The previous prime is 6101639. The next prime is 6101651. The reversal of 6101640 is 461016.

6101640 is a `hidden beast` number, since 610 + 16 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6022116 + 79524 = 2454^2 + 282^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5622 + ... + 6618.

Almost surely, 2^6101640 is an apocalyptic number.

6101640 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 6101640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10508940).

6101640 is an abundant number, since it is smaller than the sum of its proper divisors (14916240).

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

6101640 is a wasteful number, since it uses less digits than its factorization.

6101640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 6101640 is about 2470.1497930288. The cubic root of 6101640 is about 182.7323867690.

Adding to 6101640 its reverse (461016), we get a palindrome (6562656).

The spelling of 6101640 in words is "six million, one hundred one thousand, six hundred forty".