6151640 has 96 divisors (see below), whose sum is σ = 16087680. Its totient is φ = 2112000.

The previous prime is 6151597. The next prime is 6151661. The reversal of 6151640 is 461516.

It is a congruent number.

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, 150020 + ... + 150060.

It is an arithmetic number, because the mean of its divisors is an integer number (167580).

Almost surely, 2^6151640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6151640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8043840).

6151640 is an abundant number, since it is smaller than the sum of its proper divisors (9936040).

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

6151640 is a wasteful number, since it uses less digits than its factorization.

6151640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 6151640 is about 2480.2499874005. The cubic root of 6151640 is about 183.2301641756.

The spelling of 6151640 in words is "six million, one hundred fifty-one thousand, six hundred forty".