6154640 has 40 divisors (see below), whose sum is σ = 14463360. Its totient is φ = 2435456.

The previous prime is 6154627. The next prime is 6154649. The reversal of 6154640 is 464516.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (6154649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8201 + ... + 8919.

It is an arithmetic number, because the mean of its divisors is an integer number (361584).

Almost surely, 2^6154640 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 6154640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7231680).

6154640 is an abundant number, since it is smaller than the sum of its proper divisors (8308720).

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

6154640 is a wasteful number, since it uses less digits than its factorization.

6154640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 6154640 is about 2480.8546914320. The cubic root of 6154640 is about 183.2599449148.

The spelling of 6154640 in words is "six million, one hundred fifty-four thousand, six hundred forty".